US 2011/0216081 A1 · IMAGE PROCESSING APPARATUS AND METHOD THEREOF

Abstract

This invention provides an image processing apparatus and an image processing method. By calculation of the pixel difference that is the difference of each corresponding pixels between the current image and the previous image with its neighbor pixel difference, this invention can determine the blending value. Furthermore, the image processing apparatus comprises a pixel buffer unit for storing the current image and the previous image; a pixel difference calculating unit for calculating a plurality of pixel differences; a moving judgment unit, coupled to the pixel difference calculating unit, for determining the pixel moving or static according to by the plurality of pixel differences; a blending value determining unit, coupled to the moving judgment unit, for determining a new blending value when the pixel is static; and an output unit, coupled to the blending value determining unit, for generating an output image by adding the pixels belonging to the same positions pixels on the current image and the previous image with a weighting according to the blending value.

Claims20

Dependent claims

An image processing apparatus, comprising:

a pixel buffer unit, for storing a plurality of first pixels of a previous image and a plurality of second pixels of a current image in a sampling window;
a pixel difference calculating unit, for calculating a pixel difference between the first pixel and the second pixel at a position corresponding to the first pixel, and outputting a plurality of pixel differences;
a motion level determining unit, for deciding a blending value of a pixel of in the sampling window and determining whether the pixel is a static pixel or a moving pixel according to the pixel difference;
a blending value determining unit, coupled to the motion level determining unit, for determining a new blending value when the pixel is a static pixel;
and
a output unit, coupled to the blending value determining unit, for calculating the current image and the previous image using weighted average according to the blending value so as to generate and output an output image when the pixel is a moving pixel;
and calculating the current image and the previous image using weighted average according to the new blending value so as to generate and output the output image when the pixel is a static pixel.

4 more elements

An image processing method, comprising:

storing a plurality of first pixels of a previous image and a plurality of second pixels of a current image in a sampling window;
calculating a pixel difference between the first pixel and the second pixel at a position corresponding to the first pixel, and outputting a plurality of pixel differences;
deciding a blending value of a pixel of in the sampling window and determining whether the pixel is a static pixel or a moving pixel according to the pixel difference;
determining a new blending value when the pixel is a static pixel;
and
calculating the current image and the previous image using weighted average according to the blending value so as to generate and output an output image when the pixel is a moving pixel;
and calculating the current image and the previous image using weighted average according to the new blending value so as to generate and output the output image when the pixel is a static pixel.

4 more elements

Dependencies are inferred from the claim text.

Image processing apparatus and method thereof

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Image processing apparatus and method thereof

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Abstract

Claims20