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A storage space saved storage processing method

A processing method and storage space technology, applied in the field of image processing, can solve the problem of large chip size, achieve the effect of simplifying the read-write circuit and reducing the volume

Inactive Publication Date: 2008-01-30
VIMICRO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] It can be seen that this method of using the ping-pong structure, that is, two single-port memories read and write in turn, takes up too much chip volume.

Method used

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  • A storage space saved storage processing method
  • A storage space saved storage processing method
  • A storage space saved storage processing method

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Embodiment Construction

[0028] With reference to accompanying drawing 6, be the conversion circuit circuit diagram of algorithm application of the present invention, only replace original two single-port memories with a dual-port memory here.

[0029] With reference to accompanying drawing 7, there is the law of arithmetic sequence in the position of data first writing memory: row direction is the arithmetic sequence of difference value 1, is defined as Hstep; The number of data on the row direction is 20, is defined as Hwidth; The column direction is an arithmetic sequence whose difference is Hstep*Hwidth=20, which is defined as Vstep. The beginning and end of the two columns of data are also arithmetic progressions whose difference is Vstep, but when the value of the progression exceeds the threshold value (Threshold=Hwidth*8-1), the difference is obtained by subtracting the threshold value. Therefore, the location of the data in the memory has the law of horizontal and vertical arithmetic progress...

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Abstract

This invention discloses a storage process method for saving storage space including1, writing the first eight line image data in the original image in duplex storage 2, finding out the storage position of the first 8x8 module in the original image in the duplex storage storing the first eight line image data to read out related data and at the time when reading out a datum, the image data in the successive un-processed lines in the original image are written in the storage position with the image data read out 3, in the duplex storage storing the first eight line image data, the storage position of the next 8x8 module is found out and related data are read out. Every time when reading out a datum, the image data of successive un-processed lines are written in the places having read out data orderly, 4, judging if the image is finished, if not, it returns back to step 3, otherwise, it finishes.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a storage processing method saving storage space. Method of the present invention comprises steps: Background technique [0002] In an image processing circuit, such as a JPEG (Joint Photographic Experts Group) compression circuit, the data is not sequentially input into the FDCT (Forward Discrete Cosine Transformer) during compression, but is input into the FDCT in 8*8 blocks. So there is a circuit, here we call it a conversion circuit, to complete this format conversion of data. Usually, the data is continuously input into the conversion circuit line by line in units of one frame. After the first 8 rows of data are input, the conversion circuit is required to start reading the stored data in blocks, that is, the conversion circuit is required to output data in blocks while inputting data in rows. As shown in Figure 1, the function of the conversion circuit is generally comple...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/76G06F12/00
Inventor 周天夷
Owner VIMICRO CORP
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