Particular pattern of pixels for a color filter array which is used to derive luminance and chrominance values

• US 5,631,703 A
• Filed: 05/29/1996
• Issued: 05/20/1997
• Est. Priority Date: 05/29/1996
• Status: Expired due to Term

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Hamilton, Jr., John F., Adams, Jr., James E.
• Primary Examiner(s): HSIA, SHERRIE Y
• Application Number:
  US08/655,107
• Time in Patent Office: 356 Days
• Field of Search: 348/266, 348/272, 348/273, 348/279, 358/43, 358/44
• US Class Current: 348/273
• CPC Class Codes: G06T 3/4015 Image demosaicing, e.g. colour filter arrays [CFA] or Bayer patterns
• CPC Class Codes: H04N 2209/046 Colour interpolation to calculate the missing colour values
• CPC Class Codes: H04N 23/843 Demosaicing, e.g. interpolating colour pixel values
• CPC Class Codes: H04N 25/136 using complementary colours

Abstract

A color filter array for an image sensor which has a plurality of pixels is disclosed. The color filter array includes a plurality of color pixel kernels, with each kernel having a plurality of pixels arranged in the following pattern

______________________________________                                    

M G C Y G M Y C Y C G M C Y M G ______________________________________

wherein:

M is magenta;

G is green;

C is cyan; and

Y is yellow.

Claims

1. A color filter array for an image sensor which has a plurality of pixels, the color filter array comprising:

(a) a plurality of color pixel kernels, with each kernel having the plurality of pixels arranged in the following pattern

space="preserve" listing-type="tabular">______________________________________ A B C D B A D C D C B A C D A B ______________________________________

wherein;

A and B are companion colors; and

C and D are companion colors.

2. A color filter array for an image sensor which has a plurality of pixels, the color filter array comprising:

(a) a plurality of color pixel kernels, with each kernel having the plurality of pixels arranged in the following pattern

space="preserve" listing-type="tabular">______________________________________ M G C Y G M Y C Y C G M C Y M G ______________________________________

wherein;

M is magenta;

G is green;

C is cyan; and

Y is yellow.

3. A color filter array for an image sensor which has a plurality of pixels, the color filter array comprising:

(a) a plurality of color pixel kernels, with each kernel having the plurality of pixels arranged in the following pattern

space="preserve" listing-type="tabular">______________________________________ M G Y C G M C Y C Y G M Y C M G ______________________________________

wherein;

M is magenta;

G is green;

C is cyan; and

Y is yellow.