EP0425288A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Movement detection apparatus
Assignee: Canon Inc
•
Filing: 1990-10-25
•
Granted: —
•
Expires: 2010-10-25
Abstract
Abstract A movement vector detecting apparatus includes an area decision circuit for calculating a movement vector from a signal filtered through a first preprocessing filter and deciding an image area for obtaining a target movement vector, and a movement vector operation circuit for calculating a movement vector associated with the image area in accordance with a signal filtered through a second preprocessing filter and under the control of the area decision circuit.
Inventors
- 👤 Toshiaki C/O Canon Kabushiki Kaisha Kondo
- 👤 Masayoshi C/O Canon Kabushiki Kaisha Sekine
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 20:28
CPC Classifications
G; G06; G06T; G06T7/00; G06T7/20; G06T7/223; H; H04; H04N; H04N23/00; H04N23/60; H04N23/68; H04N23/681; H04N23/6811; H04N23/682; H04N23/683; H04N23/685; H04N23/686; G06T2207/00; G06T2207/10; G06T2207/10016
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
93 words
A movement detection apparatus comprising: A) first filter means; B) area deciding means for calculating a movement vector from a signal filtered through said first filter means and deciding an image detection area for detecting the movement vector; C) second filter means for extracting a predetermined signal component from an image signal extracted on the basis of the image detection area controlled by said area deciding means; and D) movement vector operating means for calculating a movement vector associated with the image detection area from a signal filtered through said second filter means.
Claim 2
Dependent Claim
93 words
A movement detection apparatus comprising: A) first filter means; B) area deciding means for calculating a movement vector from a signal filtered through said first filter means and deciding an image detection area for detecting the movement vector; C) second filter means for extracting a predetermined signal component from an image signal extracted on the basis of the image detection area controlled by said area deciding means; and D) movement vector operating means for calculating a movement vector associated with the image detection area from a signal filtered through said second filter means.
Claim 3
Dependent Claim
15 words
An apparatus according to claim 1, wherein said first filter means is a low-pass filter.
Claim 4
Dependent Claim
26 words
An apparatus according to claim 2, wherein a passband of said first filter means is determined on the basis of detection precision of a frame movement.
Claim 5
Dependent Claim
15 words
An apparatus according to claim 1, wherein said second filter means is a band-pass filter.
Claim 6
Dependent Claim
28 words
An apparatus according to claim 4, wherein a passband of said band-pass filter is determined in correspondence with a frequency component of frame vibration caused by hand vibration.
Claim 7
Dependent Claim
32 words
An apparatus according to claim 5, wherein said band-pass filter determines an image movement detection range in accordance with a period of an image pattern to be extracted by said band-pass filter.
Claim 8
Dependent Claim
43 words
An apparatus according to claim 1, wherein said area deciding means detects a distribution of frame vibrations from movement vectors at a plurality of positions on the frame and decides a detection area corresponding to a target image in accordance with statistical processing.
Claim 9
Dependent Claim
26 words
An apparatus according to claim 7, wherein said movement vector operating means quantitatively detects the frame vibration in accordance with a time and spatial gradient method.
Claim 10
Dependent Claim
25 words
An apparatus according to claim 7, wherein said movement vector operating means quantitatively detects the frame vibration in accordance with a representative point matching method.
Claim 11
Dependent Claim
114 words
A movement detection apparatus comprising A) area deciding means for detecting image movements at a plurality of positions on a frame and deciding an image detection area corresponding to a target image; B) filter means for filtering an image signal corresponding to the image detection area decided by said area deciding means to control an image movement detection range; C) movement vector operating means for operating a movement vector of an image within the image detection area from a signal filtered through said filter means; and D) correcting means for detecting an image vibration on the basis of the movement vector operated by said movement vector operating means and for correcting the image vibration.
Claim 12
Dependent Claim
114 words
A movement detection apparatus comprising A) area deciding means for detecting image movements at a plurality of positions on a frame and deciding an image detection area corresponding to a target image; B) filter means for filtering an image signal corresponding to the image detection area decided by said area deciding means to control an image movement detection range; C) movement vector operating means for operating a movement vector of an image within the image detection area from a signal filtered through said filter means; and D) correcting means for detecting an image vibration on the basis of the movement vector operated by said movement vector operating means and for correcting the image vibration.
Claim 13
Dependent Claim
14 words
An apparatus according to claim 10, wherein said filter means is a band-pass filter.
Claim 14
Dependent Claim
28 words
An apparatus according to claim 11, wherein a passband of said band-pass filter is determined in correspondence with a frequency component of frame vibration caused by hand vibration.
Claim 15
Dependent Claim
32 words
An apparatus according to claim 12, wherein said band-pass filter determines an image movement detection range in accordance with a period of an image pattern to be extracted by said band-pass filter.
Claim 16
Dependent Claim
43 words
An apparatus according to claim 10, wherein said area deciding means detects a distribution of frame vibrations from movement vectors at a plurality of positions on the frame and decides a detection area corresponding to a target image in accordance with statistical processing.
Claim 17
Dependent Claim
26 words
An apparatus according to claim 10, wherein said movement vector operating means quantitatively detects the frame vibration in accordance with a time and spatial gradient method.
Claim 18
Dependent Claim
25 words
An apparatus according to claim 10, wherein said movement vector operating means quantitatively detects the frame vibration in accordance with a representative point matching method.
Claim 19
Dependent Claim
15 words
An apparatus according to claim 10, wherein said correcting means is an optical correcting means.
Claim 20
Dependent Claim
29 words
An apparatus according to claim 10, wherein said correcting means includes an image memory and corrects the image movement by shifting an image read position of said image memory.
Claim 21
Dependent Claim
71 words
A movement vector detection apparatus comprising' A) filter means for extracting a specific frequency component from an input image signal; B) block size detecting means for deciding a block size corresponding to the specific frequency component extracted by said filter means; and C) operating means for operating a movement vector from an output signal from said filter means in correspondence with the block size decided by said block size detecting means.
Claim 22
Dependent Claim
71 words
A movement vector detection apparatus comprising' A) filter means for extracting a specific frequency component from an input image signal; B) block size detecting means for deciding a block size corresponding to the specific frequency component extracted by said filter means; and C) operating means for operating a movement vector from an output signal from said filter means in correspondence with the block size decided by said block size detecting means.
Claim 23
Dependent Claim
14 words
An apparatus according to claim 19, wherein said filter means is a band-pass filter.
Claim 24
Dependent Claim
33 words
An apparatus according to claim 20, wherein said band-pass filter decides an image movement detection range on the basis of a pattern period to be extracted and widens the image movement detection range.
Claim 25
Dependent Claim
27 words
An apparatus according to claim 21, wherein a passband of said band-pass filter is determined on the basis of an image movement frequency caused by hand vibration.
Claim 26
Dependent Claim
46 words
An apparatus according to claim 19, wherein said block size detecting means detects image movements at a plurality of positions of a frame and determines a block size for detecting an image movement from a movement distribution of the image movements at the plurality of positions.
Claim 27
Dependent Claim
22 words
An apparatus according to claim 19, wherein said operating means quantitatively detects the image vibration by a time and spatial gradient method.
Claim 28
Dependent Claim
23 words
An apparatus according to claim 19, wherein said operating means quantitatively detects the image vibration in accordance with a representative point matching method.
Claim 29
Dependent Claim
23 words
An apparatus according to claim 19, further including first correcting means for correcting a change in image brightness as a function of time.
Claim 30
Dependent Claim
26 words
An apparatus according to claim 19, further including second correcting means for correcting the image movement based on movement amount information output from said operating means.
Claim 31
Independent Claim
82 words
An apparatus in which a frame is divided into a plurality of blocks to detect movement vectors in units of blocks, comprising' A) feature extracting means for extracting a feature of an image from the frame; B) block size control means for deciding a size and a shape of the block in accordance with the feature extracted by said feature extracting means; and C) vector operating means for detecting a movement vector of a block decided by said block size deciding means.
Claim 32
Independent Claim
82 words
An apparatus in which a frame is divided into a plurality of blocks to detect movement vectors in units of blocks, comprising' A) feature extracting means for extracting a feature of an image from the frame; B) block size control means for deciding a size and a shape of the block in accordance with the feature extracted by said feature extracting means; and C) vector operating means for detecting a movement vector of a block decided by said block size deciding means.
Claim 33
Dependent Claim
40 words
An apparatus according to claim 28, wherein said feature detecting means detects a state of the image and detects an image feature on the basis of a contrast component, an edge component and an oblique direction component of the image.
Claim 34
Dependent Claim
15 words
An apparatus according to claim 29, wherein said feature extracting means includes a band-pass filter.
Claim 35
Dependent Claim
21 words
An apparatus according to claim 30, wherein a passband of said band-pass filter is set to be a television signal band.
Claim 36
Dependent Claim
27 words
An apparatus according to claim 29, wherein said feature extracting means includes a circuit for detecting sharpness of the frame from the edge component of the image.
Claim 37
Dependent Claim
22 words
An apparatus according to claim 29, wherein said feature extracting means includes a circuit for detecting a spatial gradient of the image.
Claim 38
Dependent Claim
33 words
An apparatus according to claim 28, wherein said block size control means decides a size and a shape of a block in accordance with the image feature extracted by said feature extracting means.
Claim 39
Dependent Claim
43 words
An apparatus according to claim 34, wherein said block size control means decides a size and a shape of a block so as to correspond to a position in the frame in accordance with the image feature extracted by said feature extracting means.
Claim 40
Dependent Claim
28 words
An apparatus according to claim 35, wherein said block size control means divides the frame into a plurality of blocks and adaptively controls a size of each block.
Claim 41
Dependent Claim
28 words
An apparatus according to claim 28, wherein said vector operating means quantitatively detects image vibration in accordance with a time and spatial gradient method using the movement vector.
Claim 42
Dependent Claim
24 words
An apparatus according to claim 28, wherein said movement vector operating means quantitatively detects image vibration in accordance with a representative point matching method.
Claim 43
Dependent Claim
25 words
An apparatus according to claim 28, further including means for correcting an image movement based on the movement vector operated by said vector operating means.
Claim 44
Dependent Claim
26 words
An apparatus according to claim 39, wherein said correcting means is optical correcting means for controlling a direction of an optical axis of an optical system.
Claim 45
Dependent Claim
23 words
An apparatus according to claim 39, wherein said correcting means includes image memory means for correcting movements of the image in a memory.
Claim 46
Independent Claim
84 words
A system for detecting movement in an image from an input signal representing the image, in which a first filtered signal, comprising the input signal filtered in accordance with first filter parameters, is provided to a first movement detector, and a second filtered signal, comprising the input signal filtered in accordance with second filter parameters, is provided to a second movement detector, the second movement detector operating on a portion of the image selected in accordance with the output of the first movement detector.
Claim 47
Independent Claim
84 words
A system for detecting movement in an image from an input signal representing the image, in which a first filtered signal, comprising the input signal filtered in accordance with first filter parameters, is provided to a first movement detector, and a second filtered signal, comprising the input signal filtered in accordance with second filter parameters, is provided to a second movement detector, the second movement detector operating on a portion of the image selected in accordance with the output of the first movement detector.
Claim 48
Dependent Claim
38 words
A system according to claim 42, in which the said portion of the image is selected to comprise only parts of the image having a common movement vector size and direction as detected by the first movement detector.
Claim 49
Independent Claim
56 words
A system for detecting movement in an image from an input signal representing the image, the system having a first portion which detects movement in the image by processing the image in blocks, and a second portion which selects the arrangement of the blocks for the first portion in accordance with the content of the image.
Claim 50
Independent Claim
56 words
A system for detecting movement in an image from an input signal representing the image, the system having a first portion which detects movement in the image by processing the image in blocks, and a second portion which selects the arrangement of the blocks for the first portion in accordance with the content of the image.
Claim 51
Dependent Claim
35 words
A system according to claim 44, in which the said selection in accordance with the content of the image comprises selection in accordance with the arrangement and/or sharpness of edges or contours in the image.
References Cited (Backward Citations)
EP0332169A1
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.