Image signal processor and method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorEun-kyung PARK
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Abstract
An image signal processor and a method for processing an image signal thereof are disclosed. The image signal processor stores a difference of image signals between a current frame and a previous frame, determines whether the input signal is a moving image or a still image by comparing the difference of image signals between the current frame and a frame prior to the previous frame, and filters the image signals employing a 2D comb filter or 3D comb filter. As a result, a filtering is executed using comb filters proper to a moving image and a still image.
Claims14
An image signal processor comprising:
- a memory in which a difference between image signals of a current frame and a previous frame is stored;
- a determiner which determines a degree of motion by comparing the difference between the image signals of the current frame and the previous frame with a difference between image signals of the current frame and a frame prior to the previous frame;
- and
- a filter which filters an image signal of a first format according to a result of the determination by the determiner, and outputs the filtered image signal as an image signal of a second format.
A method for processing an image signal, the method comprising:
- storing a difference between image signals of a current frame and a previous frame;
- determining a degree of motion by comparing the difference between the image signals of the current frame and the previous frame with a difference between image signals of the current frame and a frame prior to the previous frame;
- and
- filtering an image signal of a first format according to a result of the determining, and outputting the filtered image signal as an image signal of a second format.
Dependencies are inferred from the claim text.