Electronic camera for processing image segments

• US 6,512,540 B2
• Filed: 05/21/2001
• Issued: 01/28/2003
• Est. Priority Date: 10/20/1997
• Status: Expired due to Term

• Current Assignee: Monument Peak Ventures, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Eastman Kodak Company
• Inventors: Lathrop, George E.
• Primary Examiner(s): Ho, Tuan
• Application Number:
  US09/861,693
• Publication Number:
  US 20010020979A1
• Time in Patent Office: 617 Days
• Field of Search: H04/N.5225, 348/220, 348/222, 348/231, 348/232, 348/233, 348/390, 348/295, 348/403, 348/428, 348/552, 348/311, 348/320, 348/321, 348/322, 348/231.99, 348/231.3, 348/231.6, 348/222.1
• US Class Current: 348/222.1
• CPC Class Codes: H04N 1/2112 using still video cameras
• CPC Class Codes: H04N 1/2137 with temporary storage before final recording, e.g. in a frame buffer
• CPC Class Codes: H04N 2201/0087 Image storage device

Abstract

An electronic still camera includes an image sensor for capturing an original image and generating image signals corresponding to the captured original image, an A/D converter for converting the image signals into original digital image data representative of the captured original image, an image processor for incrementally processing the original digital image data to generate processed image data as each increment is processed and completed, and a non-volatile memory for storing the processed image data, wherein the non-volatile memory also temporarily stores the original digital image data until the incremental processing is completed. The incremental processing of the original image data can then be interrupted in order to capture a new image, while the processed image data for the completed increments of the original image is saved in the non-volatile memory.

Claims

1. An electronic still camera for capturing original images and performing image processing on the original images, said camera comprising:

(a) an image sensor for capturing original images and generating image signals corresponding to each original image, each original image having a like number of rows and columns of pixels;

(b) an A/D converter for converting the image signals from each original image into digital image data representative of each original image;

(c) a first memory for storing the digital image data representative of at least a portion of an original image;

(d) an image processor for receiving from the first memory a series of incremental segments of digital image data of an original image, each incremental segment having at least eight rows of pixels not previously provided to the image processor but having less than one half the number of rows of pixels in the original image, and for generating processed image data segments; and

(e) a second memory for storing the processed image data segment as the processing of each incremental segment is completed.

2. An electronic still camera as claimed in claim 1 wherein the original image data is stored in a first file format and the processed image data is stored in a second file format.

3. An electronic still camera as claimed in claim 2 wherein the original image data is stored in a TIFF file format and the processed image data is stored in a JPEG file format.

4. An electronic still camera as claimed in claim 1 wherein the image processor can be interrupted in order to capture another image while retaining the stored processed image data segments in the second memory.

5. An electronic still camera as claimed in claim 4 wherein after capture of the subsequent image, the image processor completes processing of the unprocessed segments of the original image and stores such processed segments in the second memory.

6. An electronic still camera as claimed in claim 1 wherein the processed segments are stored in a JPEG interchange format bitstream separated by restart markers.

7. An electronic still camera as claimed in claim 1 wherein the first and second memories are provided by a removable memory card.

8. An electronic still camera as claimed in claim 7 wherein the results of each incremental segment are stored in the removable memory card as the processing for each incremental segment is completed.

9. An electronic still camera as claimed in claim 1 wherein the memory is either solid-state or magnetic media.

10. An electronic still camera as claimed in claim 1 wherein each incremental segment of digital image data of the original image has an equal number of rows and columns of pixels.

11. An electronic camera as claimed in claim 10 wherein each incremental segment of digital image data of the original image has sixty four rows and sixty four columns of pixels.

12. An electronic still camera as claimed in claim 1 wherein the processing of the series of incremental segments of digital image data of the original image provides color correction.

13. An electronic still camera as claimed in claim 1 wherein the processing of the series of incremental segments of digital image data of the orginal image provides edge enhancement.

14. An electronic still camera as claimed in claim 1 wherein the processing of the series of incremental segments of digital image data of the original image provides color correction, edge enhancement, and JPEG compression.

15. An electronic still camera as claimed in claim 1 wherein the processing of the series of incremental segments of digital image data of the original image provides JPEG compression.

16. An electronic still camera as claimed in claim 1 wherein the processing of the series of incremental segments of digital image data of the original image provides CPA interpolation.

17. A method utilizing an electronic still camera for capturing original images and performing image processing on the original images, said method comprising the steps of:

(a) generating a capture signal in order to initiate an image capture of an original image;

(b) capturing original images and generating image signals corresponding to each original image, each original image having a like number of rows and columns of pixels;

(c) converting the image signals from each original image into digital image data representative of each original image;

(d) storing the digital image data representative of at least two original images in a first memory;

(e) processing a series of segments of digital image data of a first original image to generate first processed image data segments, each segment having a plurality of rows or columns of pixels, wherein the number of rows or columns of pixels of each segment is less than the number of rows or columns of pixels in the first original image, respectively,

(f) storing the first processed image data segments in a second memory as the processing of each segment is completed; and

(g) interrupting the processing of the first original image in order to capture and store a second original image into the first memory, and then resume processing of the unprocessed segments of the first original image.

18. A method as claimed in claim 17 wherein each segment of digital image data of the first original image has an equal number of rows and columns of pixels.

19. A method as claimed in claim 18 wherein each segment of digital image data of the first original image has sixty four rows of pixels and sixty four columns of pixels.

20. A method as claimed in claim 17 wherein the processing step provides color correction.

21. A method as claimed in claim 17 wherein the processing step provides edge enhancement.

22. A method as claimed in claim 17 wherein the processing step provides JPEG compression.

23. A method as claimed in claim 17 wherein the processing step further provides color correction, edge enhancement, and JPEG compression.

24. A method as claimed in claim 17 wherein the processing step provides CFA interpolation.

25. An electronic still camera for capturing original images and performing image processing on the original images, said camera comprising:

(a) an image sensor for capturing original images and generating image signals corresponding to each original image, each original image having a like number of rows and columns of pixels;

(b) an A/D converter for converting the image signals from each original image into digital image data representative of each original image;

(c) a first memory for storing the digital image data representative of at least two original images;

(d) an image processor for processing a series of segments of digital image data of a first original image to generate first processed image data segments, each segment having a plurality of rows and columns of pixels wherein the number of rows or columns of pixels of each segment is less than the number of rows or columns of pixels in the first original image, respectively, and

(e) a second memory for storing the processed image data segments as the processing of each segment is completed;

(f) wherein the image processor interrupts the processing of the first original image in order to capture and store a second original image into the first memory, and then resumes processing of the unprocessed segments of the first original image.

27. An electronic still camera as claimed in claim 25 wherein the processing of the series of incremental segments of digital image data of the original image provides CFA interpolation.

28. An electronic still camera as claimed in claim 25 wherein the digital image data of the first original image is stored in a first file format and the first processed image data segments are stored in a second file format.

29. An electronic still camera as claimed in claim 28 wherein the digital image data of the first original image is stored in a TIFF file format and the first processed image data segments are stored in a JPEG file format.

30. An electronic still camera as claimed in claim 25 wherein the first processed image data segments are stored in a JPEG interchange format bitstream separated by restart markers.

31. An electronic still camera as claimed in claim 25 wherein the first and second memories are provided by a removable memory card.

32. An electronic still camera as claimed in claim 25 wherein each segment of digital image data of the first original image has an equal number of rows and columns of pixels.

33. An electronic still camera as claimed in claim 32 wherein each segment of digital image data of the first original image has sixty four rows and sixty four columns of pixels.

34. An electronic still camera as claimed in claim 25 wherein the processing of the series of segments of digital image data of the first original image provides color correction.

35. An electronic still camera as claimed in claim 25 wherein the processing of the series of segments of digital image data of the first original image provides edge enhancement.

36. An electronic still camera as claimed in claim 25 wherein the processing of the series of segments of digital image data of the first original image provides color correction, edge enhancement, and JPEG compression.

26. An electronic still camera as claimed in clam 25 wherein the processing of the series of incremental segments of digital image data of the original image provides JPEG compression.