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JPS6436173A - Adaptive quantization coding system for picture - Google Patents

Adaptive quantization coding system for picture

Info

Publication number
JPS6436173A
JPS6436173A JP62190994A JP19099487A JPS6436173A JP S6436173 A JPS6436173 A JP S6436173A JP 62190994 A JP62190994 A JP 62190994A JP 19099487 A JP19099487 A JP 19099487A JP S6436173 A JPS6436173 A JP S6436173A
Authority
JP
Japan
Prior art keywords
quantization
picture
circuits
quantized
receiving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62190994A
Other languages
Japanese (ja)
Other versions
JPH0771292B2 (en
Inventor
Osamu Kawai
Makiko Tanoue
Takashi Ito
Kiichi Matsuda
Toshitaka Tsuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62190994A priority Critical patent/JPH0771292B2/en
Publication of JPS6436173A publication Critical patent/JPS6436173A/en
Publication of JPH0771292B2 publication Critical patent/JPH0771292B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

PURPOSE:To improve the coding efficiency of a picture by selecting a quantization coding path adaptively in response to an input signal in quantizing the picture signal or its forecast error signal. CONSTITUTION:The titled system is provided with plural quantization circuits 11-1n receiving an input signal and applying quantization, a generated information quantity calculation circuit 16 receiving the quantized output from the quantization circuits 11-1n and calculating the generated information quantity of each system, and a quantized distortion calculation circuit 17 receiving the quantized output and the input signal to calculate the quantized distortion of each system. Then the result of calculation of the generated information quantity and quantization distortion for each system is evaluated and an optimum quantization circuit is selected among the plural quantization circuits 11-1n by evaluation selection circuits 18, 19, which apply adaptive control the output to be selected in response to the designated criterion on its occasion. Thus, the quantization coding is realized always with high efficiency.
JP62190994A 1987-07-30 1987-07-30 Image adaptive quantization coding method Expired - Fee Related JPH0771292B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62190994A JPH0771292B2 (en) 1987-07-30 1987-07-30 Image adaptive quantization coding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62190994A JPH0771292B2 (en) 1987-07-30 1987-07-30 Image adaptive quantization coding method

Publications (2)

Publication Number Publication Date
JPS6436173A true JPS6436173A (en) 1989-02-07
JPH0771292B2 JPH0771292B2 (en) 1995-07-31

Family

ID=16267096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62190994A Expired - Fee Related JPH0771292B2 (en) 1987-07-30 1987-07-30 Image adaptive quantization coding method

Country Status (1)

Country Link
JP (1) JPH0771292B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05316498A (en) * 1992-05-13 1993-11-26 Mitsubishi Electric Corp Image encoder
JP2017103723A (en) * 2015-12-04 2017-06-08 日本放送協会 Encoding device, decoding device, and program
US9749660B2 (en) 2006-01-09 2017-08-29 Matthias Narroschke Adaptive coding of a prediction error in hybrid video coding

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6463907B2 (en) * 2014-06-05 2019-02-06 日本放送協会 Encoding device, decoding device and program thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58197984A (en) * 1982-05-14 1983-11-17 Nec Corp Adaptive forecasting encoding device of television signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58197984A (en) * 1982-05-14 1983-11-17 Nec Corp Adaptive forecasting encoding device of television signal

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05316498A (en) * 1992-05-13 1993-11-26 Mitsubishi Electric Corp Image encoder
US9749660B2 (en) 2006-01-09 2017-08-29 Matthias Narroschke Adaptive coding of a prediction error in hybrid video coding
US10021425B2 (en) 2006-01-09 2018-07-10 Matthias Narroschke Adaptive coding of a prediction error in hybrid video coding
US10021424B2 (en) 2006-01-09 2018-07-10 Matthias Narroschke Adaptive coding of a prediction error in hybrid video coding
US10027983B2 (en) 2006-01-09 2018-07-17 Matthias Narroschke Adaptive coding of a prediction error in hybrid video coding
US10070150B2 (en) 2006-01-09 2018-09-04 Matthias Narroschke Adaptive coding of a prediction error in hybrid video coding
JP2017103723A (en) * 2015-12-04 2017-06-08 日本放送協会 Encoding device, decoding device, and program

Also Published As

Publication number Publication date
JPH0771292B2 (en) 1995-07-31

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees