IMAGE CAPTURING METHOD AND IMAGE-CAPTURING DEVICE THEREOF

Abstract

An image capturing method and an image-capturing device thereof are provided. Firstly, a dividing rule for dividing a first part and a second part is set, such that the positions and sizes of the first and the second parts are obtained accordingly. Next, a first resolution corresponding to the first part and a second resolution corresponding to the second part are set respectively. Then, the positions and sizes of the first and the second parts, the first resolution and the second resolution are recorded in a reference table. Next, an image of an object is captured to obtain a multi-resolution analog signal. Then, the multi-resolution analog signal is transformed to a multi-resolution digital signal. After that, a first part image corresponding to the first part and a second part image corresponding to the second part are respectively obtained with reference to the multi-resolution digital signal.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flowchart of an image capturing method according to a first embodiment of the invention;

FIG. 2 is a block diagram of an image-capturing device according to the first embodiment of the invention;

FIG. 3 is a perspective of the first to the fifth parts;

FIG. 4 illustrates the contents stored in the storage unit of FIG. 2;

FIG. 5A˜5E are perspectives of the first to the fifth part images;

FIG. 6 is a flowchart of an image compressing, storing, decompressing and outputting method according to the first embodiment of the invention;

FIGS. 7A˜7E are perspectives of the first to the fifth resolution images;

FIG. 8 shows the branch layer relationship of the first to the fifth resolution images according to the first embodiment of the invention;

FIG. 9 is a block diagram of an image-capturing device according to a second embodiment of the invention; and

FIG. 10 is a diagram of a multi-resolution analog signal along the scan line 10-10′ of FIG. 3.

Claims

1. An image capturing method for capturing the image of an object, the method comprising: setting a dividing rule for dividing a first part and a second part to obtain the positions and sizes of the first part and the second part accordingly;setting a first resolution and a second resolution respectively corresponding to the first part and the second part;recording the positions and sizes of the first and the second parts, and the first resolution and the second resolution in a reference table;capturing the image of an object to obtain a multi-resolution analog signal;transforming the multi-resolution analog signal into a multi-resolution digital signal; andobtaining a first part image and a second part image respectively corresponding to the first part and the second part with reference to the multi-resolution digital signal.

2. The image capturing method according to claim 1, wherein the dividing rule comprises: dividing the first part and the second part in a pre-view interface directly.

3. The image capturing method according to claim 1, wherein the dividing rule comprises: selecting a programming algorithm in a select interface; anddividing the first part and the second part by the programming algorithm.

4. The image capturing method according to claim 1, wherein the step of capturing the image of the object further comprises: capturing the image of the object to obtain a single resolution analog signal; andprocessing the single resolution analog signal into the multi-resolution analog signal with reference to the reference table.

5. The image capturing method according to claim 1, further comprising: processing the first part image and the second part image into a first resolution image and a second resolution image respectively with reference to the reference table if the first part and the second part have an overlapping part and the first resolution is lower than second resolution, wherein the first resolution image has a blank part corresponding to the overlapping part; anddetermining that the first resolution image is equal to the first part image if the first part and the second part are not overlapped with each other.

6. The image capturing method according to claim 5, wherein the reference table further comprises a first compression algorithm type, a first compression ratio, a second compression algorithm type and a second compression ratio, the first compression algorithm and the first compression ratio correspond to the first resolution image, while the second compression algorithm and the second compression ratio correspond to the second resolution image, the method further comprising: processing the first resolution image and the second resolution image to obtain a first compression data and a second compression data respectively with reference to the reference table.

7. The image capturing method according to claim 6, the method further comprising: storing the first compression data and the second compression data in a storage unit and creating a head message table in the storage unit, wherein the head message table comprises the reference table, the position of the first compression data in the storage unit, and the position of the second compression data in the storage unit.

8. The method according to claim 7, further comprising: determining that the first resolution image and the second resolution image belong to the same branch but the layer of the first resolution image is higher or lower than layer of the second resolution image if the first part and the second part have an overlapping part and the first resolution is smaller than second resolution; anddetermining that the first resolution image and the second resolution image belong to different branches if the first part and the second part are not overlapped with each other.

9. The method according to claim 8, further comprising: storing the branch layer relationship between the first resolution image and the second resolution image to form a tree structure index table, wherein the tree structure index table comprises the head message table and the branch layer relationship between the first resolution image and the second resolution image.

10. The method according to claim 9, further comprising: decompressing the first compression data and the second compression data stored in the storage unit into the first resolution image and the second resolution image respectively with reference to the tree structure index table.

11. The method according to claim 9, after the step of decompressing the first compression data and the second compression data, the method further comprising: processing the first resolution image and the second resolution image into a to-be-outputted image with reference to a display resolution and the tree structure index table; andoutputting the to-be-outputted image.

12. The method according to claim 1, wherein the method is for continuously capturing the single image of the object to obtain a dynamic frame.

13. An image-capturing device, comprising: a setting unit, comprising: a rule-setting interface for setting a dividing rule for dividing a first part and a second part to obtain the positions and sizes of the first and the second parts, respectively; anda parameter-setting interface for setting a first resolution corresponding to the first part and a second resolution corresponding to the second part;a storage unit whose contents comprising: a reference table for recording the first resolution, the second resolution, and the size and position of the first and the second parts;a photo-sensing element for capturing the image of an object to obtain a multi-resolution analog signal; anda processing unit, comprising: a signal transformation unit for transforming the multi-resolution analog signal into a multi-resolution digital signal; anda data processing unit for obtaining a first part image and a second part image respectively corresponding to the first part and the second part with reference to the multi-resolution digital signal.

14. The image-capturing device according to claim 13, wherein the photo-sensing element comprises: a sensing unit; andan analog processing unit;wherein, the sensing unit captures the image of an object to obtain a single resolution analog signal, and then the single resolution analog signal is processed into the multi-resolution analog signal by the analog processing unit.

15. The image-capturing device according to claim 13, wherein the first part image and the second part images are processed into a first resolution image and a second resolution image respectively by the data processing unit with reference to the reference table if the first part and the second part have an overlapping part and the first resolution is lower than the second resolution, the first resolution image has a blank part corresponding to the overlapping part; andthe first resolution image is determined to be equal to the first part image if the first part and the second part are not overlapped with each other.

16. The image-capturing device according to claim 15, wherein the reference table further comprises a first compression algorithm type, a first compression ratio, a second compression algorithm type and a second compression ratio, the first compression algorithm type and the first compression ratio correspond to the first resolution image, while the second compression algorithm and the second compression ratio correspond to the second resolution image, the processing unit further comprising: a compression unit for processing the first resolution image and the second resolution image to obtain a first compression data and a second compression data respectively with reference to the reference table.

17. The image-capturing device according to claim 15, wherein the contents of the storage unit further comprise: the first compression data;the second compression data;an head message table comprising the reference table, the position of the first compression data in the storage unit, and the position of the second compression data in the storage unit.

18. The image-capturing device according to claim 17, wherein the first resolution image and the second resolution image are determined to belong to the same branch but the layer of the first resolution image is higher or lower than layer of the second resolution image if the first part and the second part have an overlapping part and the first resolution is smaller than second resolution; andthe first resolution image and the second resolution image are determined to belong to different branches if the first part and the second part are not overlapped with each other.

19. The image-capturing device according to claim 18, wherein the contents of the storage unit further comprise: a tree structure index table comprising the head message table and the branch layer relationship between the first resolution image and the second resolution image.

20. The image-capturing device according to claim 19, wherein the processing unit further comprises: a decompression unit for decompressing the first compression data stored in the storage unit and the second compression data stored in the storage unit into the first resolution image and the second resolution image respectively with reference to the tree structure index table; the data processing unit further processes the first resolution image and the second resolution image into a to-be-outputted image with reference to a display resolution and the tree structure index table, the image-capturing device further comprising:an output unit for outputting the to-be-outputted image.