Digital color image pre-processing
First Claim
1. A method for processing an image, comprising:
- providing a sensor output;
performing an automatic gain control of the sensor output to generate a first output;
performing an automatic white balance correction to the first output to generate a second output;
performing a gamma correction of the second output to generate a third output;
performing a color interpolation to the third output to generate a fourth output;
performing a low-pass spatial filtration of the fourth output to generate a fifth output;
performing a color saturation and correction of the fifth output to generate a sixth output; and
performing a high-pass spatial filtration of the sixth output to generate an image output.
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Accused Products
Abstract
In one embodiment, the invention involves a method for processing an image. A sensor output is provided. An automatic gain control of the sensor output is performed to generate a first output. An automatic white balance correction to the first output is performed to generate a second output. A gamma correction of the second output is performed to generate a third output. A color interpolation is performed to the third output to generate a fourth output. A low-pass spatial filtration of the fourth output is performed to generate a fifth output. A color saturation and correction of the fifth output is performed to generate a sixth output, and a high-pass spatial filtration of the sixth output is performed to generate an image output.
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Citations
35 Claims
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1. A method for processing an image, comprising:
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providing a sensor output;
performing an automatic gain control of the sensor output to generate a first output;
performing an automatic white balance correction to the first output to generate a second output;
performing a gamma correction of the second output to generate a third output;
performing a color interpolation to the third output to generate a fourth output;
performing a low-pass spatial filtration of the fourth output to generate a fifth output;
performing a color saturation and correction of the fifth output to generate a sixth output; and
performing a high-pass spatial filtration of the sixth output to generate an image output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 33, 34)
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11. A method for digital processing of an image, comprising:
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providing a sensor output;
performing an automatic exposure control of the sensor output to generate a first output and second output;
using the first output to update the sensor output;
performing an automatic gain control of the second output to generate a third output;
performing an automatic white balance correction of the third output to generate a fourth output;
performing color interpolation of the fourth output to generate a fifth output;
performing a low-pass spatial filtration of the fifth output to generate a sixth output;
performing color saturation of the sixth output to generate a seventh output;
performing a high-pass spatial filtration of the seventh output to generate an eighth output;
performing an auto gamma correction of the eighth output to generate a ninth output;
converting the ninth output to an output image. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for digital processing an image, comprising:
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providing a sensor output;
performing a color interpolation of the sensor output to generate a first output;
performing a color correction of the first output to generate a second output;
performing a gamma correction of the second output to generate a third output;
performing a color space conversion of the third output to generate a fourth output and fifth output;
performing an automatic exposure and gain control of the fourth output to generate a sixth output and feeding the sixth output back to the sensor;
performing a high-pass spatial filtration of the fourth output to generate a seventh output;
performing an automatic white balance correction of the fifth output to generate an eighth output and feeding the eighth output back to the sensor;
performing a chromatic median filtration of the fifth output to generate a ninth output; and
combining the seventh output with the ninth output to generate an image output. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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35. A method of performing a color image processing of an image from a sensor, comprising:
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performing automatic exposure control with feedback to the sensor;
performing an automatic gain control with feedback to the sensor; and
performing an automatic white balance control with feedback to the sensor.
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Specification