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Apparatus and method for time-domain noise inhibition and picture action intensification

A technology of noise suppression and picture, applied to the parts of color TV, parts of TV system, TV, etc., can solve the problems of increasing circuit cost and hardware waste

Active Publication Date: 2007-09-26
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004]In most cases, image signals generally need to be processed by temporal noise suppression and motion enhancement. However, if these two circuits operate separately, the It is easy to cause waste of hardware and increase circuit cost

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  • Apparatus and method for time-domain noise inhibition and picture action intensification
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  • Apparatus and method for time-domain noise inhibition and picture action intensification

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Embodiment Construction

[0030] Please refer to FIG. 3 . FIG. 3 is a system block diagram of an apparatus for simultaneously reducing temporal noise of a target image frame and motion enhancing the target image frame of the present invention. The temporal noise suppression and motion enhancement device 300 includes a temporal noise suppression circuit 310 , a storage device 320 , and a motion enhancement circuit 330 . The storage device 320 can be a dynamic random access memory (DRAM) or a static random access memory (SRAM). Please also refer to FIG. 4 , which is a system block diagram of the time-domain noise suppression circuit 310 . The temporal noise suppression circuit 310 receives the luminance signal Y_IN[N] of the Nth image frame in an image signal, and reads the filtered signal Y_NR[ of the N-1th image frame after temporal noise suppression from the storage device 320 N-1], and then the movement degree estimation circuit 410 compares the Nth video frame with the N-1th video frame to estimate...

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Abstract

The provided device for reducing target image time-domain noise and active enhancing picture quality comprises: a memory to store the first filter signal for last picture, a time-domain noise rejection circuit to reduce the picture noise according to the first filter signal and the first color signal and generate the second filter signal to store in the memory, and an active enhance circuit to generate enhancing signal and active enhance the picture.

Description

technical field [0001] The present invention relates to an image processing method, in particular to a device and method for simultaneously suppressing temporal noise of an image frame and motion enhancing the image frame. Background technique [0002] Generally speaking, in order to make the image signal have a better image quality, some image processing is usually performed on the image signal, such as temporal noise reduction on the image signal, or motion enhancement on the image signal, etc. Wait. Please refer to FIG. 1, which shows a known time-domain noise filtering device. The time-domain noise filtering device 100 includes a time-domain noise suppression circuit 110 and a storage device 120 . The temporal noise suppression circuit 110 receives the luminance information Y_IN[N] of the Nth image frame (frame) in an image signal, and reads from the storage device 120 the luminance information Y_IN[N] of the N-1th image frame after temporal noise suppression. For the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/21H04N5/14H04N9/64
Inventor 李维国王世忠陈衣凡
Owner MEDIATEK INC