Title:
PICTURE DATA CODING METHOD AND DEVICE
Document Type and Number:
Japanese Patent JP3256298
Kind Code:
B2
Abstract:
PURPOSE: To make weighting the same by dividing a picture having a person as an object into plural picture element blocks when the picture is coded so as to eliminate high frequency noise due to dispersion in the density of each picture because the picture having a person as an object has the person in the middle and a background in other parts of the picture and the property of the picture differs from each picture.
CONSTITUTION: The device for coding picture data is made up of a means 11 applying orthogonal transformation to multi-value data of picture elements for each block of original picture data divided into plural blocks, a means 12 quantizing an orthogonal transformation coefficient obtained by the means 11, a means 13 outputting a '0' quantization coefficient, a switch means 14 switching the quantization coefficients from the means 12, 13, a command means 15 selecting either of them and outputting the selected coefficient, and a means 16 coding the picture for each block. The device is formed as above, the orthogonal transformation coefficient obtained by applying orthogonal transformation to multi-value data of plural picture elements in each block is quantized and when the coefficient is a coefficient of a prescribed degree or over, the coefficient is replaced with '0' and coding is implemented for each block.
Inventors:
Kimitaka Murashita
Tsuguo Noda
Tsuguo Noda
Application Number:
JP31029992A
Publication Date:
February 12, 2002
Filing Date:
November 19, 1992
Export Citation:
Assignee:
富士通株式会社
International Classes:
H03M7/30; G06T9/00; H04N1/41; H04N1/415; H04N19/102; H04N19/132; H04N19/134; H04N19/136; H04N19/162; H04N19/167; H04N19/176; H04N19/33; H04N19/423; H04N19/60; H04N19/625; H04N19/91; H04N19/96; (IPC1-7): H04N7/30; G06T9/00; H03M7/30; H04N1/41; H04N1/415
Domestic Patent References:
| JP422273A | ||||
| JP256186A | ||||
| JP4290088A | ||||
| JP4247789A | ||||
| JP4266285A | ||||
| JP3102988A | ||||
| JP338185A | ||||
| JP389779A |
Other References:
中村康弘、松井甲子雄，「画像の階層的符号化・伝送のためのすり鉢型標本化法」，画像電子学会誌，日本，画像電子学会，１９９０年４月２５日，１９９０ ＶＯＬ．１９ Ｎｏ．２，ｐｐ．４３−５１
Attorney, Agent or Firm:
Yoshiyuki Osuge (1 outside)
Previous Patent: EARTH EXCAVATOR FOR PNEUMATIC CAISSON
Next Patent: BALL DISCHARGE CONTROL DEVICE FOR PINBALL MACHINE
Next Patent: BALL DISCHARGE CONTROL DEVICE FOR PINBALL MACHINE