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Image motion compensation device and method

A compensation device and image technology, applied in the direction of image communication, TV, color TV parts, etc., can solve the problems of inability to use memory space, limit the range of motion compensation, etc.

Active Publication Date: 2021-09-28
MEDIATEK INC
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Problems solved by technology

However, a fixed cache space configuration does not make more efficient use of memory space, and places considerable limitations on the range of motion compensation that can be performed

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  • Image motion compensation device and method
  • Image motion compensation device and method

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Embodiment Construction

[0080] An object of the present invention is to provide an image motion compensation device and method, which can dynamically control the number of pixels in the first range and the number of pixels in the second range accessed by the cache circuit, so as to flexibly use the capacity of the cache circuit.

[0081]Please refer to figure 1 . figure 1 It is a block diagram of the image processing device 100 in an embodiment of the present invention. in accordance with figure 1 The image processing device 100 includes an image memory circuit 110 , an image motion estimation device 120 and an image motion compensation device 130 .

[0082] The image memory circuit 100 stores a plurality of images Iin, each including a plurality of pixels. In one embodiment, the image memory circuit 100 includes a dynamic random-access memory (Dynamic Random-Access Memory; DRAM).

[0083] The image motion estimation device 120 receives the image Iin from the image memory circuit 100 to generate ...

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Abstract

The invention includes an image motion compensation device, which includes: a motion vector information processing circuit, a cache circuit, a memory configuration control circuit and an image motion compensation circuit. The motion vector information processing circuit generates image interpolation phase and motion vector state according to the motion vector information between the front image and the rear image. The cache circuit allocates the first and second memory spaces to respectively store the first range of pixels in the previous image and the second range of pixels in the rear image read from the external memory circuit. The memory configuration control circuit generates a configuration control signal to control the cache circuit to dynamically allocate the size of the first and second memory spaces according to the image interpolation phase and the state of the motion vector. The image motion compensation circuit generates an interpolation image corresponding to the image interpolation phase from the pixels in the first and second ranges according to the motion vector information and the configuration control signal.

Description

technical field [0001] The present invention relates to image processing technology, in particular to an image motion compensation device and method. Background technique [0002] Motion compensation is a technology widely used in the field of image processing. For example, when an image is to be converted from a lower frame rate to a higher frame rate, an image motion compensation technique is needed to generate an interpolated frame. [0003] The technology of image motion compensation needs to generate an interpolation frame according to the front image and the rear image. In some technologies, the front image and the back image are stored in a large but slow memory, and part of the front and back image information is stored in a small but fast cache for interpolation. However, the cache space is limited, and only part of the image blocks of the before image and the after image can be accessed. In some techniques, half of the cache space is used to store image blocks r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/14H04N5/21
CPCH04N5/144H04N5/21
Inventor 刘邦贤曾宇晟
Owner MEDIATEK INC
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