Motion Capture Data Compression and Decompression Method
A technology of motion capture and data compression, applied in the direction of electrical components, code conversion, etc., can solve problems such as visual errors, affecting visual effects, and low compression ratio, so as to save space and avoid visual effects
Inactive Publication Date: 2015-07-29
DALIAN NATIONALITIES UNIVERSITY
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[0002] Motion capture data has been widely used in the fields of computer animation and game development due to its advantages of being able to reflect motion details and generate highly realistic animations. Compression has become a key technology to ensure its application effect. The compression methods for motion capture data in the prior art, such as key frame extraction methods, are all lossy compression. Because the currently used motion capture data has been processed by key frame extraction technology The lossy compression method for the passed data will affect the visual effect and easily cause visual errors; the general lossless data compression method in the prior art cannot effectively and fully utilize the motion capture data because it is not aimed at the specific data of the motion capture data characteristics, so that the compression ratio obtained is not high, and the decompression time is long
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[0065] The present invention is described in detail in conjunction with accompanying drawing:
[0066] Such as figure 1 , image 3 , Figure 4 A kind of motion capture data compression method shown, comprises the steps:
[0067] A: Set the motion capture data to include displacement data consisting of three columns of data PosX, PosY, and PosZ and rotation data consisting of four columns of RotX, RotY, RotZ, and ω; PosX, PosY, and PosZ are the position parameters of the motion capture data ; RotX, RotY, RotZ, ω are the rotation parameters of the motion capture data respectively; each data in each column of data is 32-bit floating-point data;
[0068] B: Convert 32-bit floating-point data to 16-bit integer data:
[0069] Subtract the adjacent data of each column of PosX, PosY, and PosZ to obtain 32-bit floating-point difference data; quantize the 32-bit floating-point difference data to form 16-bit integer data, and obtain PosX where each data is a 16-bit integer ", PosY",...
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The invention discloses a method for compressing and decompressing motion capture data. The method comprises that motion capture data comprise displacement data which consist of three rows of PosX, PosY and PosZ and rotary data which consist of four rows of RotX, RotY, RotZ and omega, every data of each of rows of data is 32-bit floating data, the 32-bit floating data is converted to 16-bit integer data, three rows of displacement data of PosX'', PosY'' and PosZ'' and three rows of rotary data of RotX'', RotY'' and RotZ'' are obtained, the data prediction processing is conducted for displacement data PosX'', PosY'' and PosZ'' or rotary data RotX'', RotY'' and RotZ'', data to be coded are obtained, and data to be coded are coded. By the aid of the method, the data processing is conducted to the motion capture data, the compression is lossless and efficient and the space is saved.
Description
technical field [0001] The invention relates to a motion capture data compression and decompression method. Background technique [0002] Motion capture data has been widely used in the fields of computer animation and game development due to its advantages of being able to reflect motion details and generate highly realistic animations. Compression has become a key technology to ensure its application effect. The compression methods for motion capture data in the prior art, such as key frame extraction methods, are all lossy compression. Because the currently used motion capture data has been processed by key frame extraction technology The lossy compression method for the passed data will affect the visual effect and easily cause visual errors; the general lossless data compression method in the prior art cannot effectively and fully utilize the motion capture data because it is not aimed at the specific data of the motion capture data Therefore, the compression ratio obt...
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IPC IPC(8): H03M7/30
Inventor 王鹏杰周济民宋海玉宋天毅
Owner DALIAN NATIONALITIES UNIVERSITY