Image motion vector sensor for sensing image displacement amount

• US 5,019,901 A
• Filed: 03/26/1990
• Issued: 05/28/1991
• Est. Priority Date: 03/31/1989
• Status: Expired due to Term

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Uomori, Kenya, Morimura, Atsushi
• Primary Examiner(s): Britton, Howard W.
• Assistant Examiner(s): Hsia, Sherrie
• Application Number:
  US07/498,902
• Time in Patent Office: 428 Days
• Field of Search: 358/105, 358/108, 358/22, 358/133, 358/135, 358/136, 358/141, 358/138
• US Class Current: 348/699
• CPC Class Codes: G06T 2207/10016 Video; Image sequence
• CPC Class Codes: G06T 7/223 using block-matching

Abstract

An image motion vector sensor is provided which includes a motion vector sense section in which an input signal of an image plane is subdivided into a plurality of sense domains so as to compute a motion vector of an image in each of the domains, a motion vector decision section for judging validity of the motion vector in each domain so as to decide a motion vector of an entire image plane, a vector reliability density decision section for producing a coefficient which is a function of the density with respect to time of a signal proportional to the number of the domains judged to be valid, and a control section for controlling a magnitude of the motion vector of the entire image plane based on an output from the vector reliability density decision section.

Claims

1. An image motion vector sensor, comprising:

a motion vector sense section in which an input signal of an image plane is subdivided into a plurality of sense domains so as to compute a motion vector of an image in each said domain;

a motion vector decision section for judging validity of the motion vector in each said domain so as to decide a motion vector for an entire image plane, said motion vector decision section counting the number of the domains which contain a motion vector judged to be valid;

a vector reliability density decision section for producing a coefficient which is a function of density with respect to time of a signal proportional to said number supplied by the motion vector decision section; and

a control section for controlling a magnitude of the motion vector for the entire image plane based on the output of said vector reliability density decision section.

2. An image motion vector sensor according to claim 1, wherein said control section is a controlled integrator which performs integration with respect to time of the motion vector supplied by said motion vector decision section, wherein in said integration an integration leakage quantity is controlled based on the coefficient supplied by said vector reliability density decision section.

3. An image motion vector sensor according to claim 1, wherein said control section is a multiplier which performs multiplication of the motion vector supplied by said motion vector decision section and the coefficient supplied by said vector reliability density decision section.

4. An image motion vector sensor according to claim 1, wherein said control section is a combination of an integrator and a multiplier in series, said integrator performing integration with respect to time of the motion vector supplied by said motion vector decision section, and said multiplier performing multiplication of the output of said integrator and the coefficient supplied by said vector reliability density decision section.

5. An image motion vector sensor, comprising:

a motion vector sense section in which an input signal of an image plane is subdivided into a plurality of sense domains so as to compute a motion vector of an image in each said domain;

a motion vector decision section for judging validity of the motion vector in each said domain so as to decide a motion vector for an entire image plane;

a control section for controlling a magnitude of the motion vector for the entire image plane; and

an operator console for supplying said control section with a coefficient for controlling the magnitude of the motion vector for the entire image plane.

6. An image motion vector sensor according to claim 5, wherein said control section is a controlled integrator which performs integration with respect to time of the motion vector supplied by said first motion vector decision section wherein, in said integration an integration leakage quantity is controlled based on the coefficient supplied by said operator console.

7. An image motion vector sensor according to claim 5, wherein said control section is a multiplier which performs multiplication of the motion vector supplied by said motion vector decision section and the coefficient supplied by said operator console.

8. An image motion vector sensor according to claim 5, wherein said control section is a combination of an integrator and a multiplier in series, said integrator performing integration with respect to time of the motion vector supplied by said motion vector decision section, and said multiplier performing multiplication of the output of said integrator and the coefficient supplied by said operator console.