Patent FR1102173A successfully refreshed from Google Patents.
Patent US2215415A successfully refreshed from Google Patents.
Patent DE863281C successfully refreshed from Google Patents.
Patent EP0557007A2 successfully refreshed from Google Patents.
EP0557007A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Picture processing apparatus
Assignee: Sony Corp
•
Filing: 1993-02-10
•
Granted: —
•
Expires: 2013-02-10
Abstract
Abstract In a picture processing apparatus such as a television camera, monitor camera, television conference system and the likeike, an imaging device is controlled to follow desired target object and image it in the best state. In first target object following apparatus, a distribution of motion vectors within a tracking vector detection area is detected, and then the most characteristic motion vector is detected. In second target object following apparatus, a power of components in high frequency band is detected per an unit of predetermined blocks, as well as difference data between picture data of motion pictures of the present frame and the previous frame is obtained, the power of the difference data is detected per an unit of predetermined blocks, and an edge having movement is detected on the basis of the detection result. In a picture conversion apparatus by which high quality motion picture is transmitted, such as a picture processing apparatus in which picture data is processed to motion compensate a picture data, a motion field detection circuit detects disorder of a motion vector, on the basis of which a quantizing step size is changed so that the step size is roughly set regarding to a portion of picture not to easy perceive a deterioration of a picture quality.
Inventors
- 👤 Koji c/o Sony Corporation Kageyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 17:43
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/785; G01S3/786; G01S3/7864; G06; G06T; G06T7/00; G06T7/20; G06T7/223; G06T7/231; H; H04; H04N; H04N19/00; H04N19/10; H04N19/102; H04N19/103; H04N19/112; H04N19/50; H04N19/503; H04N19/51; H04N19/527; H04N19/60; H04N19/61; H04N5/00; H04N5/14; H04N5/144; G06T2207/00; G06T2207/10; G06T2207/10016
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
131 words
A target object following apparatus comprising: a picture data blocking circuit for dividing picture data sequentially input into blocks per unit of predetermined pixels in horizontal and vertical directions; a detection area setting circuit for setting a tracking vector detection area including predetermined numbers of blocks in horizontal and vertical directions; a motion detection circuit for detecting a motion vector for said respective blocks in said tracking vector detection area; and a tracking vector detection circuit for detecting a distribution of said motion vector in said tracking vector detection area on the basis of the detection result of said motion detection circuit, and then detecting a moving direction and moving quantity of a portion of a picture in said tracking vector detection area on the basis of said distribution detection result.
Claim 2
Dependent Claim
100 words
The target object following apparatus according to claim 1, further comprising: an imaging means for outputting a picture data obtained to image a predetermined target object into said target object following apparatus; an imaging area changing means for changing an imaging area with said imaging means on the basis of a predetermined control signal; and a detection area correction circuit for moving said tracking vector detection area with tracking to a motion of said picture in said tracking vector detection area, on the basis of the detection result of said tracking vector detection circuit within said target object following apparatus.
Claim 3
Dependent Claim
275 words
A target object following apparatus comprising: a spatial edge detection circuit for outputting a spatial edge detection result for a motion picture sequentially input; a time edge detection circuit for outputting a time edge detection result for said motion picture; and an edge judging means for outputting a motion edge detection result, on the basis of said spatial edge detection result and said time edge detection result: wherein said spatial edge detection circuit comprises; a spatial power detection circuit for outputting a spatial power detection result detecting powers of high frequency components per an unit of predetermined blocks of said motion picture; and first comparison circuit for obtaining a comparison result of comparing said spatial power detection result with first comparison reference, and then outputting said spatial edge detection result, when said spatial power detection result is larger than said first comparison reference: wherein said time edge detection circuit comprises; a time power detection circuit for obtaining a difference data between the present frame picture data and the previous frame picture data of said motion picture, and then detecting a power of said difference data to output a time power detection result per an unit of predetermined blocks; and second comparison circuit for obtaining a comparison result of comparing said time power detection result with second comparison reference, and then, when said time power detection result is larger than said second comparison reference, outputting said time edge detection result: wherein said edge judging circuit judges as an edge having a motion, when both of said spatial edge detection result and said time edge detection result are obtained, and then outputting said motion edge detection result.
Claim 4
Dependent Claim
156 words
The target object following apparatus according to claim 3, further comprising: a picture data blocking circuit for dividing picture data sequentially input into first and second blocks per unit of predetermined pixels in a horizontal and a vertical directions; a detection area setting circuit for setting a tracking vector detection area including predetermined numbers of said blocks in a horizontal and a vertical directions; a motion detection circuit for detecting a motion vector for said second respective blocks within said tracking vector detection area; and a tracking vector detection circuit for detecting a distribution of said motion vector within said tracking vector detection area on the basis of the detection results of said spatial edge detection circuit and said time edge detection circuit in said target object following apparatus, and then detecting a moving direction and a moving quality of said picture within said tracking vector detection area on the basis of said distribution detection result.
Claim 5
Dependent Claim
88 words
The target object following apparatus according to claim 4, further comprising: an imaging means for imaging predetermined target object, and then outputting picture data into said target object following apparatus; an imaging area changing means for changing said imaging area of said imaging means on the basis of predetermined control signal; and a detection area correction circuit for tracking the movement of said picture within tracking vector detection area on the basis of the detection result of said tracking vector detection circuit within said target object following apparatus.
Claim 6
Dependent Claim
127 words
A picture conversion apparatus comprising: a motion detection circuit for detecting a motion vector of respective blocks, after dividing picture data input sequentially; a picture data processing circuit for motion compensating said picture data on the basis of said motion vector, and then outputting residual data; a motion field detection circuit for detecting disorder of said motion vector for a block of said residual data and surrounding block adjacent said block; a quantizing circuit for quantizing said residual data, and then outputting quantized data; and a buffer circuit for storing said quantized data, and then outputting said stored quantized data; wherein said quantizing circuit for changing a quantizing step size in large way, when said vector is disorder, on the basis of said motion field detection circuit.
Claim 7
Dependent Claim
28 words
A picture processing apparatus comprising: said target object following apparatus according to claim 1, 2, 3, 4 or 5; and said picture conversion apparatus according to claim 6.
Claim 8
Dependent Claim
24 words
The target object following apparatus according to claim 1, 4 or 6, wherein: said motion vector is computed by means of block matching method.
Claim 9
Dependent Claim
66 words
The target object following apparatus according to claim 1 or 4, wherein: in said tracking vector detection circuit, data represented by numbers of said motion vectors in stored into tables which are provided for respective moving directions and moving quantities within said tracking vector detection area, the numbers of distributing of said table decide said moving direction and said moving quantity to the maximum motion vector.
Claim 10
Dependent Claim
30 words
The target object following apparatus according to claim 4, wherein: in said motion detection circuit, said motion vector is calculated only when said spatial edge data said time edge exist.
Claim 11
Dependent Claim
49 words
The picture processing apparatus according to claim 6, wherein: in said motion field detection circuit, said disorder of said motion vector is calculated such a manner that it executes outer-product of said motion vector and the vector of surrounding block, and then executes absolute summation of said outer-product results.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.