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Video data storing method and apparatus

A technology of image data and data, applied to 2,...,2n magnification sub-sampled images, 4, storing image data in order to obtain the whole field, which can solve the problems of practical operation limitations, inability to skip reading, etc., to reduce memory Space and bandwidth, and the effect of improving reading efficiency

Inactive Publication Date: 2009-08-19
SUNPLUS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are limitations in actual operation. When the memory is stored in characters, it is impossible to read pixel data in bits in an efficient manner. As a result, most hardware implementations must Additional low-resolution images are stored for easy reading

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  • Video data storing method and apparatus
  • Video data storing method and apparatus

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Embodiment Construction

[0027] image 3 and Figure 4 They are respectively a block diagram of a device for storing image data and a flow chart of a method according to a preferred embodiment of the present invention. Please also refer to image 3 and Figure 4 , first the original image receiver 31 receives the original image data, and the pixel processor 32 includes the first buffer 321, the second buffer 322, ..., and the second n The multiple buffers of the buffer 323 store the pixel values ​​of the original image (step S400).

[0028] Then, it is judged whether the pixel values ​​stored in these buffers reach a data volume (step S410), if not, then continue to receive and store the original image data (step S400); if the data volume has been reached, the pixel processor 32 Utilize the data buffer controller 320 therein to read the xth pixel line of these stored original image data according to the highest magnification of the sub-sampling, and separate them into 2 n Group pixel groups (step...

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Abstract

A method and device for storing image data, the method is to use a pixel processor to separate the pixel value of an image data into multiple pixel groups according to the highest magnification of sub-sampling and the data width of the memory, and separate them after reorganization Stored in different memory blocks of the internal memory, it is possible to efficiently obtain sub-sampled images with a magnification of 2n while only storing full-resolution image data, which improves the shortcomings of requiring additional storage of low-resolution images in the past. In addition, the data of these pixel groups are cross-arranged, so that when accessing sub-sampled and original images, each memory block can be opened evenly and alternately, thereby further improving the efficiency of memory usage.

Description

technical field [0001] The present invention relates to a method for storing image data, and in particular to a method for storing image data so as to obtain all, 2, 4, ..., 2 n Method for subsampling the image by multiplication. Background technique [0002] figure 1 Shown is a block diagram of an image encoder using hierarchical dynamic search. When encoding an image, in addition to the full-resolution original image, one to several layers of low-resolution downscaled images are required for roughly moving the searcher 120 Using , the method of generating a reduced image includes using an image filter 110 to first filter the pixels of the original image, and then reduce the resolution to obtain it, or directly reduce the sub-sampling (sub-sample) of the pixels of the original image to obtain . However, in the past, when implemented by hardware, low-resolution image data will be generated and stored in an additional memory, thereby increasing the space used in the memory...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/919
Inventor 谢百举王子欣林建佑
Owner SUNPLUS TECH CO LTD