Claims
- 1. A method of determining a presumed motion vector for a particular frame pixel block of digital signal data comprising plural frame pixel blocks where data relating to said particular frame pixel block are lost during transmission or reception of said digital signal data, said method comprising the steps of:
- (a) storing values of N (N>0) decoded motion vectors for said digital signal data in a memory, with respect to x and y directions of said digital signal data, independently for said x direction and said y direction;
- (b) determining a frequency of occurrence of said values of said N decoded motion vectors independently for said x direction and said y direction;
- (c) selecting a first one of said values of N decoded motion vectors having a largest frequency of occurrence in said x direction and selecting a second one of said values of N decoded motion vectors having a largest frequency of occurrence in said y direction;
- (d) if said largest frequency of occurrence in said x direction or in said y direction is less than a threshold value, increasing a value of said number N and repeating said steps (a)-(d) with respect to the increased value of said number N; and
- (e) determining said presumed motion vector in accordance with said first one and said second one of said values of N decoded motion vectors.
- 2. A method of determining a presumed motion vector for a particular frame pixel block of digital signal data comprising plural frame pixel blocks where data relating to said particular frame pixel block are lost during transmission or reception of said digital signal data, said method comprising the steps of:
- (a) storing values of N (N>0) decoded motion vectors for said digital signal data in a memory, with respect to x and y directions of said digital signal data, independently for said x direction and said y direction;
- (b) determining a weighted frequency of occurrence of said values of said N decoded motion vectors independently for said x direction and said y direction; and
- (c) selecting a first one of said values of N decoded motion vectors having a largest weighted frequency of occurrence in said x direction and selecting a second one of said values of N decoded motion vectors having a largest weighted frequency of occurrence in said y direction;
- (d) if said largest weighted frequency of occurrence in said x direction or in said y direction is less than a threshold value, increasing a value of said number N and repeating said steps (a)-(d) with respect to the increased value of said number N; and
- (e) determining said presumed motion vector in accordance with said first one and said second one of said values of N decoded motion vectors.
Priority Claims (1)
Number |
Date |
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Kind |
4-176609 |
Jul 1992 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/083,779, filed Jun. 30, 1993 (abandoned).
US Referenced Citations (8)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0521529A2 |
Jan 1993 |
EPX |
3-136595 |
Jun 1991 |
JPX |
Non-Patent Literature Citations (3)
Entry |
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M. Wada; "Selective Recovery of Video Packet Loss using Error Concealment"; IEEE Journal on Selected Areas in Communication; vol. 7, No. 5, Jun. 1989; pp. 807-814. |
Continuations (1)
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Number |
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83779 |
Jun 1993 |
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