Image processing system with aliasing detection mechanism and method of operation thereof
AssigneeSony Corporation
InventorsXiaogang Dong, Jiro Takatori, Tak-Shing Wong
Life of this patent
Estimating the term…
Abstract
An image processing system, and a method of operation thereof, includes: an imaging sensor and lens assembly for receiving a first shot; and a defocus blur unit for calculating a defocus blur based on the first shot; wherein: the imaging sensor is for receiving a second shot with the defocus blur; and further comprising: a low-pass filter for generating a low-pass image by filtering the first shot based on the defocus blur; a comparison unit for comparing the low-pass image with the second shot for detecting a color aliasing; and a correction unit for correcting the color aliasing in the first shot.
Claims19
A method of operation of an image processing system comprising:
- receiving a first shot with an imaging sensor, wherein the first shot has a frequency less than a specified frequency;
- calculating a defocus blur based on the first shot;
- receiving a second shot with the defocus blur with the imaging sensor, wherein the second shot has a frequency greater than the specified frequency;
- performing a demosaic operation on the first shot for generating a first demosaic image;
- performing the demosaic operation on the second shot for generating a second demosaic image for processing the low-pass image;
- generating a low-pass image by filtering the first demosaic image based on the defocus blur with a low-pass filter;
- comparing the low-pass image with the second demosaic image for detecting a color aliasing;
- and
- correcting the color aliasing in the first shot.
A method of operation of an image processing system comprising:
- capturing a first shot with an imaging sensor, wherein the first shot has a frequency less than a specified frequency;
- calculating a defocus blur based on the first shot;
- capturing a second shot with the defocus blur with the imaging sensor, wherein the second shot has a frequency greater than the specified frequency;
- generating a first demosaic image from the first shot and a second demosaic image from the second shot;
- generating a low-pass image by filtering the first demosaic image based on the defocus blur with a low-pass filter;
- comparing the low-pass image with the second demosaic image for detecting a color aliasing;
- and
- correcting the color aliasing in the first shot.
An image processing system comprising:
- an imaging sensor and lens assembly for receiving a first shot, wherein the first shot has a frequency less than a specified frequency;
- and
- a defocus blur unit for calculating a defocus blur based on the first shot;
- wherein:
- the imaging sensor is for receiving a second shot with the defocus blur, wherein the second shot has a frequency greater than the specified frequency;
- and
- further comprising:
- a low-pass filter for generating a low-pass image by filtering the first shot based on the defocus blur;
- a comparison unit for comparing the low-pass image with the second shot for detecting a color aliasing;
- and
- a demosaic unit for generating a first demosaic image from the first shot and a second demosaic image from the second shot;
- and
- wherein:
- the low-pass filter is for generating the low-pass image by filtering the first demosaic image based on the defocus blur;
- and
- the comparison unit is for comparing the low-pass image with the second demosaic image for detecting the color aliasing;
- and
- a correction unit for correcting the color aliasing in the first shot.
Dependencies are inferred from the claim text.