Method and system operative to process color image data

• US 8,849,019 B2
• Filed: 12/01/2013
• Issued: 09/30/2014
• Est. Priority Date: 11/16/2010
• Status: Active Grant

• Current Assignee: Hand Held Products Incorporated (Honeywell International Inc.)
• Original Assignee: Hand Held Products Incorporated (Honeywell International Inc.)
• Inventors: Li, Jingquan, Deloge, Stephen Patrick
• Primary Examiner(s): Bayat, Ali
• Application Number:
  US14/093,487
• Publication Number:
  US 20140078342A1
• Time in Patent Office: 303 Days
• Field of Search: 382/162, 382/167, 382/168, 382/237, 382/270, 382/274, 382/254, 358/1.2, 358/3.13, 358/472, 358/457, 345/596, 345/597, 345/598, 345/599, 345/600, 348/453
• US Class Current: 382/162
• CPC Class Codes: H04N 1/40012 Conversion of colour to monochrome
• CPC Class Codes: H04N 1/64 Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor H04N19/00 takes precedence
• CPC Class Codes: H04N 1/644 using a reduced set of representative colours, e.g. each representing a particular range in a colour space
• CPC Class Codes: H04N 5/76 Television signal recording

Abstract

A method and system operative to process color image data are disclosed. In one embodiment, the method can comprise the steps of receiving color image data, determining the color ranges to be applied to the color image data, assigning each of the pixel positions in the image data a color range, assigning a different spatial binary pattern to each color range, and assigning each of the pixel positions a binary output pixel value that corresponds to the spatial binary pattern assigned to the color range assigned to that pixel position. The resulting binary image data can be written to a file for subsequent storage, transmission, processing, or retrieval and rendering. In other embodiments, a system can be made operative to accomplish the same.

Claims

1. A method, comprising:

receiving, with a CPU, a frame of color image data comprising a plurality of input pixel values corresponding to a plurality of pixel positions in an image, wherein said input pixel values are represented as N-bit values, and wherein N>

1;

defining a plurality of color ranges with the CPU;

assigning, with the CPU, each of the pixel positions to one of the defined color ranges based on the pixel position'"'"'s input pixel value;

defining, with the CPU, a plurality of spatial binary patterns, wherein each spatial binary pattern is different from the other spatial binary patterns;

assigning each of the color ranges to one of the spatial binary patterns with the CPU; and

assigning, with the CPU, an output pixel value to each of the pixel positions, wherein the output pixel value for a given pixel position is representative of the spatial binary pattern assigned to the color range assigned to the given pixel position.

2. The method of claim 1, wherein the input pixel values comprise RGB color scale components for each pixel position.

3. The method of claim 2, comprising mapping the RGB scale components for each pixel position to an input color index value for each of the pixel positions with the CPU.

4. The method of claim 1, wherein the input pixel values comprise an input color index value for each pixel position.

5. The method of claim 1, comprising writing the output pixel values to a file with the CPU.

6. The method of claim 5, wherein the file comprises:

the output pixel values; and

a header comprising information regarding the spatial binary patterns.

7. The method of claim 5, wherein the file comprises:

the output pixel values; and

a header comprising information regarding each of the color ranges and information regarding the spatial binary patterns assigned to each color range.

8. The method of claim 5, wherein the file is in an industry standard file format.

9. The method of claim 5 wherein the file is in a custom file format.

10. The method of claim 5, comprising:

reading the file; and

rendering an image using data in the file.

11. A system, comprising:

one or more computers configured for;

receiving a frame of color image data comprising a plurality of input pixel values corresponding to a plurality of pixel positions in an image, wherein said input pixel values are represented as N-bit values, and wherein N>

1;

defining color ranges;

assigning each of the pixel positions to one of the defined color ranges based on the pixel position'"'"'s input pixel value;

defining a plurality of unique spatial binary patterns;

assigning each of the color ranges to one of the spatial binary patterns; and

assigning an output pixel value to each of the pixel positions, wherein the output pixel value for a given pixel position is representative of the spatial binary pattern assigned to the color range assigned to the given pixel position.

12. The system of claim 11, wherein the input pixel values comprise RGB color scale components for each pixel position.

13. The system of claim 12, wherein the one or more computers are configured for mapping the RGB scale components for each pixel position to an input color index value for each of the pixel positions.

14. The system of claim 11, wherein the input pixel values comprise an input color index value for each pixel position.

15. A system, comprising:

one or more computers configured for;

receiving a frame of color image data comprising a plurality of input pixel values corresponding to a plurality of pixel positions in an image, wherein said input pixel values are represented as N-bit values, and wherein N>

1;

defining color ranges;

assigning each of the pixel positions to one of the defined color ranges based on the pixel position'"'"'s input pixel value;

defining a plurality of unique spatial binary patterns;

assigning each of the color ranges to one of the spatial binary patterns;

assigning an output pixel value to each of the pixel positions, wherein the output pixel value for a given pixel position is representative of the spatial binary pattern assigned to the color range assigned to the given pixel position; and

writing the output pixel values to a file.

16. The system of claim 15, wherein the file comprises:

the output pixel values; and

a header comprising information regarding the spatial binary patterns.

17. The system of claim 15, wherein the file comprises:

the output pixel values; and

a header comprising information regarding each of the color ranges and information regarding the spatial binary patterns assigned to each color range.

18. The system of claim 15, wherein the file is in an industry standard file format.

19. The system of claim 15, wherein the input pixel values comprise RGB color scale components for each pixel position.

20. The system of claim 19, wherein the one or more computers are configured for mapping the RGB scale components for each pixel position to an input color index value for each of the pixel positions.