Image sensing device and image processing method of the same
AssigneeSamsung Electronics Co., Ltd.
InventorsChan Young Jang, Hee Kang
Life of this patent
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Abstract
An image processing device and an image processing method are provided. The image processing device includes an image sensor configured to sense and output a raw image and an image signal processor configured to compare pixel values of the raw image with a reference level to classify a saturation color image and a non-saturation color image, calculate a first fixed pattern noise from the saturation color image, calculate a second fixed pattern noise from the non-saturation color image, generate a final fixed pattern noise by combining the first fixed pattern noise with the second fixed pattern noise, and output a revised image by subtracting the final fixed pattern noise from the raw image.
Claims20
An image processing device comprising:
- an image sensor configured to sense and output a raw image;
- and
- an image signal processor configured to compare pixel values of the raw image with a reference level to classify a saturation color image and a non-saturation color image,
- calculate a first fixed pattern noise from the saturation color image,
- calculate a second fixed pattern noise from the non-saturation color image,
- generate a final fixed pattern noise by combining the first fixed pattern noise with the second fixed pattern noise, and
- output a revised image by subtracting the final fixed pattern noise from the raw image.
An image processing device connected to an image sensor, the image processing device comprising:
- processing circuitry configured to
- compare pixel values of a raw image based on a reference level to classify the pixel values into a saturation color image and a non-saturation color image;
- generate a first fixed pattern noise in consideration of a saturation pixel from the saturation color image;
- generate a second fixed pattern noise from the non-saturation color image;
- generate a final fixed pattern noise by combining the first fixed pattern noise with the second fixed pattern noise;
- and
- generate a revised image by removing the final fixed pattern noise from the raw image.
An image processing method of an image sensing device, the image processing method comprising:
- classifying a raw image received from an image sensor into a saturation color image and a non-saturation color image by comparing the raw image with a reference level per pixel;
- calculating a first fixed pattern noise from the saturation color image;
- calculating a second fixed pattern noise from the non-saturation color image;
- generating a final fixed pattern noise by combining the first fixed pattern noise with the second fixed pattern noise;
- and
- outputting a revised image by removing the final fixed pattern noise from the raw image.
Dependencies are inferred from the claim text.