JPS5693492A - Interframe coding device - Google Patents

Interframe coding device

Info

Publication number
JPS5693492A
JPS5693492A JP17066779A JP17066779A JPS5693492A JP S5693492 A JPS5693492 A JP S5693492A JP 17066779 A JP17066779 A JP 17066779A JP 17066779 A JP17066779 A JP 17066779A JP S5693492 A JPS5693492 A JP S5693492A
Authority
JP
Japan
Prior art keywords
detection
vector
dynamic vector
function value
steps
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.)
Pending
Application number
JP17066779A
Other languages
Japanese (ja)
Inventor
Akira Hirano
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP17066779A priority Critical patent/JPS5693492A/en
Publication of JPS5693492A publication Critical patent/JPS5693492A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding

Abstract

PURPOSE:To enhance the detection precision without increasing the device scale considerably, by dividing detection of the dynamic vector into two steps and by adopting different speed detection methods in respective steps, in the interframe coding device due to dynamic vector detection. CONSTITUTION:One frame or one field of the input television signal is divided into plural blocks, and for individual blocks, the dynamic vector of motion of the television picture is detected to correct motion. Detection of the dynamic vector is divided into two steps, and different speed detection methods are adopted in respective steps. That is, the dynamic vector is detected temporarily in the first step, and a shift vector group to obtain the appreciation function value is determined on a basis of the detection result of the first step in the second step, and the appreciation function value is obtained only for the determined shift vector group, and a shift vector where the appreciation function value is minimum is defined as the dynamic vector.
JP17066779A 1979-12-27 1979-12-27 Interframe coding device Pending JPS5693492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17066779A JPS5693492A (en) 1979-12-27 1979-12-27 Interframe coding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17066779A JPS5693492A (en) 1979-12-27 1979-12-27 Interframe coding device

Publications (1)

Publication Number Publication Date
JPS5693492A true JPS5693492A (en) 1981-07-29

Family

ID=15909132

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17066779A Pending JPS5693492A (en) 1979-12-27 1979-12-27 Interframe coding device

Country Status (1)

Country Link
JP (1) JPS5693492A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123616A1 (en) 1983-04-20 1984-10-31 Nippon Telegraph And Telephone Corporation Interframe coding method and apparatus therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123616A1 (en) 1983-04-20 1984-10-31 Nippon Telegraph And Telephone Corporation Interframe coding method and apparatus therefor

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