CN100533347C - Portable electronic device - Google Patents
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- CN100533347C CN100533347C CNB2006101035427A CN200610103542A CN100533347C CN 100533347 C CN100533347 C CN 100533347C CN B2006101035427 A CNB2006101035427 A CN B2006101035427A CN 200610103542 A CN200610103542 A CN 200610103542A CN 100533347 C CN100533347 C CN 100533347C
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Abstract
A portable electronic installation comprises an image plucking device, a focal length measuring device, a display unit and a bit shift detecting controller. The image plucking device can pluck the images continuously; the focal length measuring device is coupled with the image plucking device, so as to chronologically measure a plurality of the focal lengths which correspond to a plurality of the positions to be tested; the display unit cam output a image plane; the bit shift detecting controller is coupled to the focal length measuring device and the display unit, so as to ascertain the bit shift or rotary movement of the portable electronic installation as per the variation of a plurality of focal lengths measured by the focal length measuring device, so as to control the image display of the display unit.
Description
Technical field
The invention provides a kind of portable electronic devices, refer to especially a kind ofly can carry out the electronic installation that picture is browsed according to the displacement/rotational situation of self.
Background technology
Portable electronic product on the market such as mobile phone, PDA(Personal Digital Assistant) or the like, has all possessed the function of online now.Therefore, the user can utilize these portable electronic products to be connected to world-wide web whenever and wherever possible, carrying out browsing of webpage by mobile phone screen, and then exchanges information on network, the inquiry data, even carry out financial services such as stock transaction.Clearly, portable electronic product has been innovated the circulation style of information, not only can allow the user easily information to be carried, and also makes the convenience of financial transaction greatly improve.
But, because the display device that portable electronic product had nearly all is the screen of reduced size, comparatively inconvenience when this makes browsing page; With the mobile phone is example, because the sub-fraction that screen can only display web page, the user must rely on the directionkeys of mobile phone to control when browsing page, make webpage in addition drop-down/on move, reach the purpose of browsing page; Yet for the user, such mode of operation is unsatisfactory.Therefore, portable electronic product needs other operation mechanism, and is convenient so that the user browses picture.
United States Patent (USP) openly in communique US2002037770 number, has disclosed a kind of method that picture shows of controlling in early days; This method is the mode that image application is handled, and utilizes camera model to detect user's situation of movement, to control recreation (demonstration of control picture); For instance, this patent is by detecting moving of user, controlling the cursor on the screen accordingly, to replace in the script computer system function of input equipments such as mouse or keyboard.
In European Union's patent in early days openly in communique WO2003079179 number, also disclosed similar method, it utilizes camera model to detect user's situation of movement, to control the cursor on the screen accordingly, substitute in the script computer system function of input equipments such as mouse or keyboard.
Above-mentioned machine-processed major part all is at desktop computer, does not propose suitable operation mechanism at portable electronic product; For portable electronic devices, because the screen of portable electronic product is less, the user when browsing page, often need drop-down continually/on move picture, just can browse complete webpage, such mechanism is not a gratifying practice on portable electronic product; The operating environment of adding portable electronic product has the limitation of self, thus still have many defectives, and improved necessity is arranged.
Summary of the invention
Therefore one of fundamental purpose of the present invention is to provide a kind of displacement/rotational situation of portable electronic devices of utilizing itself to carry out the portable electronic devices that picture is browsed, to solve the problem in the known technology.
The present invention discloses a kind of portable electronic devices, and this device includes: an image capture unit is used for continuous pick-up image; One focometry device is coupled to this image capture unit, is used for measuring according to the order of sequence on institute's pick-up image a plurality of focal lengths with respect to a plurality of positions to be measured; One display device is used for exporting a picture; An and displacement detection controller, be coupled to this focometry device and this display device, be used for this a plurality of focal lengths measured according to this focometry device, focal length to same position to be measured in last image that this image capture unit captured and back one image compares, and then determine this portable electronic devices displacement or rotation situation according to the variation of these a plurality of focal lengths, and then the picture of controlling this display device shows.
The present invention also discloses a kind of portable electronic devices in addition, and this device includes: an image capture unit is used for continuous pick-up image; One display device is used for exporting picture; And a displacement detection controller, be coupled to this image capture unit and this display device, be used for according to the order of sequence relatively institute's pick-up image, determine the situation that this portable electronic devices rotates, and then the picture of controlling this display device shows.
The present invention also discloses a kind of use one portable electronic devices in addition and carries out the method that picture is browsed, and this method comprises: continuous pick-up image; Measure on institute's pick-up image a plurality of focal lengths according to the order of sequence with respect to a plurality of positions to be measured; This a plurality of focal lengths measured according to this focometry device, focal length to same position to be measured in last image that this image capture unit captured and back one image compares, and then determines this portable electronic devices displacement or rotation situation according to the variation of these a plurality of focal lengths; And control the operation that this picture is browsed according to displacement or the rotation situation of judging this portable electronic devices.
The present invention also discloses a kind of use one portable electronic devices in addition and carries out the method that picture is browsed, and this method comprises: continuous pick-up image; Compare institute's pick-up image according to the order of sequence, determine the situation that this portable electronic devices rotates, and then control the picture demonstration of this display device.
The present invention utilizes the displacement/rotational situation of electronic installation itself to control the demonstration of portable electronic product accordingly, thus the user repeatedly the service orientation key browse picture; In other words, the invention provides another comparatively easy picture browsing method, can allow the user to pass through up and down displacement/rotational mobile phone, control screen-picture, with reach drop-down, on move, amplify or dwindle the function of screen image, and then make things convenient for the picture of portable electronic product to browse.
Description of drawings
Fig. 1 is the functional block diagram of mobile phone of the present invention.
Fig. 2 is the first embodiment process flow diagram of the performed operation of mobile phone shown in Figure 1.
The synoptic diagram of Fig. 3 image that image capture unit captures.
Fig. 4 has illustrated when mobile phone moves horizontally, the situation of change of focal length.
Fig. 5 has illustrated when mobile phone rotates, the situation of change of focal length.
Fig. 6 is the second embodiment flow process of the performed operation of mobile phone shown in Figure 1.
Fig. 7 has illustrated when mobile phone moves, the situation of change of the image that image capture unit captured.
Fig. 8 has illustrated that mode how to use the image comparison judges the situation of movement of mobile phone.
Fig. 9 has illustrated when mobile phone rotates, the situation of change of the image that captures.
Figure 10 has illustrated that mode how to use focal length and image comparison simultaneously judges the rotation situation of mobile phone.
Embodiment
See also Fig. 1, Fig. 1 is the functional block diagram of mobile phone 100 of the present invention.Shown in first figure, mobile phone 100 includes a camera model 110, one displacement detection controllers (motion detector) 120, and a display device 130.Camera model 110 includes an image capture unit (imagecapturing device) 111 and one focometry module 112.Wherein focometry module 112 is coupled to image capture unit 111; Displacement detection controller 120 is coupled to camera model 110 and display device 130.In addition, mobile phone 100 includes Anneta module in addition, and signal processing circuit or the like (not being shown in Fig. 1) is to provide the communication function of mobile phone; Yet the function of element and operation think that industry understands like this, do not give unnecessary details at this.
Please note at this, in order to provide the mode of browsing picture more easily to the user, the present invention comes control corresponding (such as controlling cursor or browsing behavior of picture or the like) is made in the picture output of display device 130 by mobile phone 100 displacement/rotational (referring to displacement or rotation) situations own.In other words, the user only needs mobile mobile phone 100, just can browse display device 130 shown pictures.
In present embodiment, image that displacement detection controller 120 can be detected by camera model 110 and focal length are as a reference, the foundation of being used as the displacement/rotational of judging mobile phone 100, and then the demonstration of control display device 130, its detail operations and function will describe in detail in following description.
See also Fig. 2, Fig. 2 is the first embodiment process flow diagram of the performed operation of mobile phone shown in Figure 1 100.It includes the following step:
Step 200: image capture unit 111 continuous pick-up images;
Step 202: focometry module 112 is measured on institute's pick-up image a plurality of focal lengths with respect to a plurality of positions to be measured according to the order of sequence;
Step 204: displacement detection controller 120 is determined the situation of mobile phone 100 displacement/rotational according to the situation of change of the measured a plurality of focal lengths of focometry module 112;
Step 206: displacement detection controller 120 is according to the situation of mobile phone displacement/rotational, and control display device 130 is carried out the demonstration of picture.
At first, the image capture unit 111 meeting continuous pick-up images (step 200) in the camera model 110, and focometry module 112 is determined a plurality of positions to be measured on the images, and measure the focal length of these a plurality of positions to be measured.See also Fig. 3 at this, Fig. 3 is the synoptic diagram of the image that captures of image capture unit 111.In shown in Figure 3, suppose that the image that captures is user's a face, in present embodiment, focometry module 112 can be measured the focal length of a plurality of tested points on the image (such as 5 some A-E shown in Figure 3).
See also Fig. 4 at this, Fig. 4 has illustrated when mobile phone 100 moves horizontally, the situation of change of focal length.Wherein, the pairing focal length of tested point A-C on the picture is respectively the L1-L3 (tested point A-C mutual distance D1) among the figure, and when mobile phone 100 during to the right or to left, focal length L1, the L2, the L3 that record on one image of back have corresponding variation; Shown in the 4th figure, when mobile phone 100 during to left, focal length L1 can be to infinitely great.Therefore, in present embodiment, displacement detection controller 120 is to measure on institute's pick-up image a plurality of focal lengths with respect to a plurality of positions to be measured according to the order of sequence according to focometry module 112, detect the situation of change of a plurality of focal length L1, L2, L3, determining the situation (step 204) that mobile phone 100 moves, and then the control display device is carried out the demonstration situation (step 206) of picture.For instance, when displacement detection controller 120 detects focal length L3 when being changed to infinity, displacement detection controller 120 judges that just mobile phone 100 is to right translation, and then the picture demonstration of control display device 130 (is carried out translation accordingly such as its webpage of browsing of control, or the cursor of mouse moves right accordingly on the picture), when mobile phone translation up or down, the situation of tested point DBE is similar to ABC, no longer repeats.
See also Fig. 5 at this, Fig. 5 has illustrated when mobile phone 100 rotates, the variation situation of focal length.In the same manner, some A-C pairing focal length is respectively the L1-L3 among the figure, and when mobile phone 100 to the right or when turning left, focal length L1, L2, L3 have corresponding variation; As shown in Figure 5, when mobile phone 100 turned right, focal length L3 increased to infinity; On the other hand, when mobile phone 100 turned left, focal length L1 increased to infinity; When mobile phone rotated up or down, the situation of tested point DBE was similar to ABC, no longer repeated.Therefore, in present embodiment, displacement detection controller 120 also can be measured on institute's pick-up image a plurality of focal lengths with respect to a plurality of positions to be measured according to the order of sequence by focometry module 112, measure the situation of change of focal length L1, L2, L3, with the rotation situation (step 204) of definite mobile phone 100, and then the control display device is carried out the demonstration situation of picture.By the description of front as can be known, when mobile phone 100 displacement/rotational, the present invention can move/rotate the focal length variations that is caused with reference to mobile phone 100, browses with the picture of control display device 130.
From the above, need only the focal length variations situation according to 5 tested point A-E, displacement detection controller 120 just can be assessed mobile phone displacement/rotational situation up and down, with the demonstration of control picture; Yet the present invention does not limit the quantity and the position of tested point; For instance, focometry device 112 can be measured the focal length of more a plurality of tested points on the image, so that mobile detection device 120 when mobile detection, can have higher resolution; So corresponding variation also belongs to category of the present invention.
In addition, mobile phone 100 is except the mode with translation, corresponding moving outside the picture of being browsed, mobile phone 100 of the present invention also can utilize the distance between mobile phone 100 and the user, and the picture of browsing is carried out convergent-divergent (such as amplifying (zoom in) or dwindling (zoom out) picture).For instance, the user can further mobile phone 100 or zoom out, with the zoom degree of control picture.Disclose so far, above-mentioned mechanism has this field knows that usually the knowledgeable should be understood that, for instance, displacement detection controller 120 can be detected the measured focal length of focometry device 112, if the focal length of tested point A-E shortens simultaneously, on behalf of mobile phone 100 and user's distance, this furthered, thus displacement detection controller 120 just may command display device 130 accordingly the webpage of browsing is carried out convergent-divergent, for example picture is amplified; On the other hand,, represent mobile phone 100 and user's distance to zoom out if the focal length of tested point A-E is all elongated, thus displacement detection controller 120 just may command display device 130 accordingly the webpage of browsing is carried out convergent-divergent, for example picture is dwindled.
In above announcement, displacement detection controller 120 is situations of change of utilizing focal length, judges the moving state of mobile phone 100, yet the present invention does not limit the detecting mechanism of displacement detection controller 120.Please consult Fig. 6 in addition at this, Fig. 6 is the second embodiment process flow diagram for the performed operation of mobile phone shown in Figure 1 100.It includes the following step:
Step 600: image capture unit 111 continuous pick-up images;
Step 602: displacement detection controller 120 compares institute's pick-up image according to the order of sequence, to determine the situation of mobile phone 100 displacement/rotational;
Step 604: displacement detection controller 120 is according to the situation of mobile phone displacement/rotational, and the picture of controlling this display device 130 shows.
See also Fig. 7.Fig. 7 has illustrated when mobile phone 100 moves, the situation of change of image capture unit 111 picked image.As shown in Figure 7, suppose that with the middle oblique line block of last image be the scope of analysis, if mobile phone 100 moves up, the situation that this centre block in one image of back can move down; In the same manner, if mobile phone 100 moves down, the situation that the middle block of last image can move up in one image of back; If mobile phone 100 is moved to the left, the situation that the middle block of last image can move right in one image of back; If mobile phone 100 moves right, the situation that the middle block of last image can be moved to the left in one image of back.
Therefore, displacement detection controller 120 can utilize the position of above-mentioned oblique line block to be analyzed, to learn the degree of displacement of mobile phone 100.For instance, see also Fig. 8, suppose mobile phone 100 to left, the middle block of last image is in can the move right distance of S2 of back one image.Therefore, in present embodiment, displacement detection controller 120 can be detected the translation situation of mobile phone 100 by any line segment of relatively middle block; For instance, displacement detection controller 120 can be in one image of back, from the position of dotted line L1 at last image, toward about compare one by one, when displacement detection controller 120 searches with dotted line L1 apart from the dotted line L2 of S2, can find that the similarity of dotted line L2 and dotted line L1 reaches more than certain degree (as predetermined critical), therefore, just displacement detection controller 120 can judge that mobile phone 100 is to left.In like manner, if mobile phone is to right translation, displacement detection controller 120 also can be searched toward both sides item by item by to dotted line L1, reaching certain more than the degree if find another line segment and the similarity of script line segment L1, is to right translation just can affirm mobile phone 100.In present embodiment, in order to accelerate the detecting speed of displacement detection controller 120, can preestablish the scope (only searching 100 pixels left to the right) that displacement detection controller about 120 is searched, to quicken the speed that displacement detection controller 120 is judged mobile phone 100 sense of displacement such as setting displacement detection controller 120.
In the same manner, if will judge whether mobile phone 100 is situation about moving up and down, displacement detection controller 120 only need to change get in the middle of specified level lines in the block, then upwards search downwards, just can judge mobile phone 100 whereby and be and make progress or move down.
Note that in the above embodiments that at this displacement detection controller 120 is in the image that is captured, and detects a specific line segment before and after mobile phone 100 moves, to judge the moving state of mobile phone 100.Yet such search mechanism only is a preferred embodiment of the present invention, but not restriction of the present invention.Such as, displacement detection controller 120 also can be among the different images that captures, above-mentioned middle block is searched, up to searching the corresponding block the highest with the similarity of middle block, relend the distance and the direction of this corresponding block and centerablock, judge the moving state of mobile phone 100; So corresponding variation also belongs to category of the present invention.In addition, no matter be to search with the specific line segment or the mode of particular block, this field person had know that usually the knowledgeable should be understood that, for instance, displacement detection controller 120 can more specific line segment and the pixel value of other line segments, when the pixel value similarity of specific line segment and a certain line segment surpasses a certain predetermined critical (threshold), displacement detection controller 120 just can be considered as this line segment the mobile result of this specific line segment, and judge the moving direction of mobile phone 100 whereby, and then the behavior of picture is browsed in control.
In addition, suppose that the controlling mechanism that adopts is to rotate handheld apparatus up and down, the situation that the image that image acquisition module 111 captures moves, catch up with down the left and right sides parallel when mobile the difference of maximum be that slight distortion can take place image.See also Fig. 9, Fig. 9 has illustrated when mobile phone 100 rotates, the situation of change of the image that captures.In the same manner, work as the scope that performs an analysis at this with that middle oblique line block of image, suppose that handheld apparatus upwards rotates, before and after then rotating, block in the middle of the image not only can move down, and the oblique line block can be out of shape, form positive trapezoidal, this is because when handheld apparatus upwards rotates, and the camera lens upper limb of image acquisition module 111 can elongate with the distance of original acquisition object because of the factor of upwards rotating, and the lower edge of camera lens can further with original distance that captures object, the oblique line block cause the object of the image generation image upper limb that whole acquisition comes out to dwindle, and the object of lower edge is exaggerated, so will be deformed into similar trapezoid; On the other hand, if handheld apparatus down rotates, then the oblique line block of image not only can move up, and the image block can be out of shape, and forms put upside down trapezoidal.
Identical with the above embodiments, displacement detection controller 120 also can be detected a specific line segment in the image that captures, to judge the moving state of mobile phone 100; Or in image, directly centerablock is searched for, to judge the moving state of mobile phone 100.Unique it is noted that: because postrotational image has trickle distortion (distortion), so when carrying out the image comparison, the parameter about distortion must be taken into account.Disclose so far, its image manner of comparison should be understood that being familiar with this operator, so do not give unnecessary details at this.
In above explanation, be to utilize the mode of the variation of focal length and comparison image to judge the moving state of mobile phone 100 respectively, yet the present invention also can be simultaneously and with two above-mentioned methods, extrapolate direction and distance that mobile phone 100 moves.See also Figure 10, Figure 10 has illustrated that mode how to use focal length and image comparison simultaneously judges that mobile phone 100 turns right, as mentioned above, when mobile phone rotates, the focal length of position to be measured can change thereupon in last image and back one image, and the middle block of last image also is moved to the left thereupon and produces distortion in one image of back.For the intermediate point B of image, before mobile phone did not rotate as yet, its pairing focal length was L2, and after mobile phone 100 rotated, its corresponding focal length became L2 '.Therefore can roughly calculate the angle θ that mobile phone 100 rotates according to following equation (1).
θ=cos
-1(L2/L2 ') equation (1)
And utilize the angle θ calculate and following equation (2), roughly estimate the image translation apart from S2:
S2=L2 ' * sin θ equation (2)
After distance S2 rough estimate was come out, displacement detection controller 120 just can carry out above-mentioned image relatively according to distance S2; In other words, displacement detection controller 120 is in one image of back, from beginning the demonstration line segment of periphery is searched with the position of central point apart from S2, with seek one with the highest line segment of the specific line segment similarity of script.Then, after the highest corresponding line segment of similarity detects, just can judge mobile phone 100 accurate rotation situation according to the distance of the corresponding line segment that detects with specific line segment originally.Note that at this therefore, seek actions afterwards can be saved many search times because displacement detection controller 120 utilizes the variation situation of focal length roughly to estimate position after block (or specific line segment) moves in the middle of the image earlier; For instance, originally if not in advance rough estimate go out the position after block (or the specific line segment) displacement in the middle of the image, displacement detection controller 120 will be searched apart from S2 from intermediate point B at least, just have an opportunity to find corresponding block (or corresponding line segment); Yet, since present embodiment elder generation rough estimate approximate location, therefore displacement detection controller 120 only needs to do search among a small circle, just can detect corresponding block (or corresponding line segment), has increased the usefulness that displacement detection controller 120 detecting mobile phones 100 rotate far and away.
Note that as is known in the industry that at this mobile phone generally all has processor and memory device, memory device then has the firmware program (procedure code) that is used for controlling inner each element of mobile phone; Therefore in a preferred embodiment of the present invention, displacement detection controller 120 utilizes a processor to carry out a firmware program and realizes; In other words, displacement detection controller 120 does not limit and must implement with hardware mode; In the reality, displacement detection controller 120 can be used as the firmware program in the memory device.And processor is to carry out this firmware program, with finish the performed action of above-mentioned displacement monitoring controller 120 (such as image detecting, image relatively or operations such as control display frame), this field has knows that usually the knowledgeable should understand, and does not give unnecessary details at this.
Though note that and in above-mentioned announcement, all be illustrated with mobile phone 100; Yet mobile phone only is one embodiment of the invention, but not restriction of the present invention.In other words, the present invention can be applicable to browse the mode of picture so that user's another kind to be provided in any portable electronic device with camera model.
In known technology, the present invention utilizes the moving of electronic equipment itself, rotation situation as a reference, reaches the effect of the picture of controlling portable electronic product, thus the user repeatedly the service orientation key browse picture; In other words, the invention provides another comparatively easy picture browsing method, can allow the user to pass through up and down displacement/rotational mobile phone, control screen-picture, with reach drop-down or on move the function of browsing mobile phone picture.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (8)
1, a kind of portable electronic devices, it comprises:
One image capture unit is used for continuous pick-up image;
One focometry device is coupled to this image capture unit, is used for measuring according to the order of sequence on institute's pick-up image a plurality of focal lengths with respect to a plurality of positions to be measured;
One display device is used for exporting a picture; And
One displacement detection controller, be coupled to this focometry device and this display device, be used for this a plurality of focal lengths measured according to this focometry device, focal length to same position to be measured in last image that this image capture unit captured and back one image compares, and then determine this portable electronic devices displacement or rotation situation according to the variation of these a plurality of focal lengths, and then the picture of controlling this display device shows.
2, portable electronic devices as claimed in claim 1 wherein measures these a plurality of focal lengths when all shortening when this displacement detection controller, controls this display device and amplifies this picture; When this displacement detection controller measures these a plurality of focal lengths when all elongating, control this display device and dwindle this picture.
3, portable electronic devices as claimed in claim 1, the direction of facing with the user is reference, wherein the focal length that measures position to be measured, the left side when this displacement detection controller becomes big and the focal length of position to be measured, the right when diminishing, and controls this display device and is moved to the left this picture or cursor; The focal length that measures position to be measured, the right when this displacement detection controller becomes big and the focal length of position to be measured, the left side when diminishing, and controls this display device move right this picture or cursor; When the focal length that the focal length that measures position to be measured, top when this displacement detection controller becomes big and following position to be measured diminishes, control this display device move up this picture or cursor; The focal length that measures following position to be measured when this displacement detection controller becomes big and the focal length of position to be measured, top when diminishing, and controls this display device and moves down this picture or cursor.
4, portable electronic devices as claimed in claim 1, this displacement detection controller is coupled to this image capture unit in addition, wherein:
When this displacement detection controller is determined the displacement of this portable electronic devices or rotation direction, calculate the angle that this portable electronic devices rotates according to the image intermediate point in the focal length variations amount of last image and back one image earlier, utilize this angle to estimate in the middle of the last image block or the certain line section moves the position of back in one image of back, search at this position periphery of back one image then, to find the highest corresponding block of similarity or pixel value similarity to surpass the corresponding line segment of predetermined critical, again according to this centre block or specific line segment at this last image and corresponding block or the relative position of corresponding line segment in this back one image, judge the displacement or the rotation direction of this portable electronic devices.
5, a kind of portable electronic devices that is used for carries out the method that picture is browsed, and this method comprises:
Continuous pick-up image;
Measure on institute's pick-up image a plurality of focal lengths according to the order of sequence with respect to a plurality of positions to be measured;
According to these measured a plurality of focal lengths, the focal length of same position to be measured in the last image that captured and back one image is compared, and then determine this portable electronic devices displacement or rotation situation according to the variation of these a plurality of focal lengths; And
Control the operation that this picture is browsed according to displacement or the rotation situation of judging this portable electronic devices.
6, method as claimed in claim 5 wherein when these a plurality of focal lengths all shorten, is amplified this picture; When these a plurality of focal lengths all elongate, dwindle this picture.
7, method as claimed in claim 5, the direction of facing with the user is reference, wherein becomes big and the focal length of position to be measured, the right when diminishing when the focal length of position to be measured, the left side, controls this display device and is moved to the left this picture or cursor; When the focal length of position to be measured, the right becomes big and the focal length of position to be measured, the left side when diminishing, control this display device move right this picture or cursor; When the focal length that becomes big and following position to be measured when the focal length of position to be measured, top diminishes, control this display device move up this picture or cursor; When the focal length of bottom position to be measured becomes big and the focal length of position to be measured, top when diminishing, control this display device and move down this picture or cursor.
8, as 5 described methods of claim the, it also comprises:
Calculate the angle that this portable electronic devices rotates according to the image intermediate point in the focal length variations amount of last image and back one image earlier, utilize this angle to estimate in the middle of the last image block or the certain line section moves the position of back in one image of back, search at this position periphery of back one image then, to find the highest corresponding block of similarity or pixel value similarity to surpass the corresponding line segment of predetermined critical, again according to this centre block or specific line segment at this last image and corresponding block or the relative position of corresponding line segment in this back one image, judge the displacement or the rotation direction of this portable electronic devices.
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| CNB2006101035427A CN100533347C (en) | 2006-07-21 | 2006-07-21 | Portable electronic device |
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| CNB2006101035427A CN100533347C (en) | 2006-07-21 | 2006-07-21 | Portable electronic device |
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