OBJECT EXTRACTION METHOD, AND IMAGE SENSING APPARATUS USING THE METHOD
First Claim
1. An object extraction method for extracting an object from a sensed image, comprising the steps of:
- changing an extraction condition associated with object extraction on the basis of an image sensing condition or an image sensing environment upon image sensing; and
executing the object extraction under a more appropriate extraction condition.
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Abstract
This invention provides an object extraction method for performing processing for extracting and cutting out a specific object from a sensed image at high speed, and an image sensing apparatus using the method. In this invention, in a method of extracting an object by comparing a sensed image and a standard image, a focusing signal, focal length data, visual axis direction data, and illumination conditions are detected, and the initial size, initial position, or initial color of the standard image is changed on the basis of the detection results, and extraction is started under optimal conditions. In a method of extracting a specific object from the background image, the background image is converted into an image having the same conditions as those of the object image. From a plurality of images obtained under different image sensing conditions, the contour of the object is accurately obtained at high speed. In an object extraction method using a template, the size of the template is determined on the basis of the object distance, object size, or the like.
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Citations
102 Claims
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1. An object extraction method for extracting an object from a sensed image, comprising the steps of:
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changing an extraction condition associated with object extraction on the basis of an image sensing condition or an image sensing environment upon image sensing; and
executing the object extraction under a more appropriate extraction condition. - View Dependent Claims (2, 3, 4, 5)
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6. An image information extraction apparatus comprising:
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image sensing means for generating an image by sensing an object;
standard image storage means for storing a standard image to be compared with the image output from said image sensing means;
standard image initialization means for initializing the standard image on the basis of an image sensing mode when said image sensing means senses the object; and
image comparison means for comparing the initialized standard image initialized by said standard image initialization means and the image output from said image sensing means, and determining the presence of the object when similarity between the two images exceeds a predetermined value. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 19, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71)
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7. An image information extraction apparatus comprising:
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image sensing means for generating an image by sensing an object;
image sensing mode storage means for storing an image sensing mode when said image sensing means senses the object;
image storage means for storing the image output from said image sensing means;
standard image storage means for storing a standard image to be compared with the image output from said image sensing means;
standard image initialization means for initializing the standard image on the basis of the image sensing mode stored in said image sensing mode storage means; and
image comparison means for comparing the initialized standard image initialized by said standard image initialization means and the image output from said image sensing means, and determining the presence of the object when similarity between the two images exceeds a predetermined value.
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8. An image information extraction apparatus comprising:
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image sensing means for generating an image by sensing an object;
image sensing mode extraction means for extracting an image sensing mode when said image sensing means senses the object;
image sensing mode storage means for storing the image sensing mode extracted by said image sensing mode extraction means;
image storage means for storing the image output from said image sensing means;
standard image storage means for storing a standard image to be compared with the image output from said image sensing means;
standard image initialization means for initializing the standard image on the basis of the image sensing mode extracted by said image sensing mode extraction means;
image comparison means for comparing the initialized standard image initialized by said standard image initialization means and the image output from said image sensing means; and
image cutting means for cutting out an image on the basis of the output from said image comparison means.
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17. An image information extract-Lon method for searching for a specific object by executing:
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image generation processing for generating an image by sensing an object;
extraction processing for extracting an image sensing state when the image is generated by performing the image generation processing;
standard image reading processing for reading out a standard image to be compared with the image generated by the image generation processing from storage means;
standard image initialization processing for initializing the standard image read out from the storage means by the standard image reading processing on the basis of the image sensing state extracted by the extraction processing; and
image comparison processing for comparing the initialized standard image initialized by the standard image initialization processing and the image generated by the image generation processing.
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18. An image extraction apparatus comprising:
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image input means for inputting a plurality of images sensed under different image sensing conditions;
image sensing condition control means for controlling the image sensing conditions of said image input means;
recording/reproduction means for recording and reproducing the image sensing conditions of said image input means;
image storage means for storing the images sensed by said image input means;
image data comparison means for comparing at least a pair of image data of the plurality of images stored in said image storage means;
initial contour setting means for setting an initial contour on the basis of a comparison result from said image data comparison means;
background image region removal means for removing a background image region in the initial contour set by said initial contour setting means; and
image cutting processing means for performing image cutting processing on the basis of an output from said background image region removal means.
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20. An image extraction apparatus comprising:
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image input means for inputting a plurality of images sensed under different image sensing conditions;
image sensing condition control means for controlling the image sensing conditions of said image input means;
recording/reproduction means for recording and reproducing the image sensing conditions of said image input means;
image storage means for storing the images sensed by said image input means;
image data comparison means for comparing at least a pair of image data of the plurality of images stored in said image storage means;
selection/indication means for selecting and indicating image data to be compared by said image data comparison means;
initial contour setting means for setting an initial contour on the basis of a comparison result from said image data comparison means;
image generation means for generating an image on the basis of initial contour data set by said initial contour setting means;
initial contour/initial intra-contour image data correction means for correcting the initial contour and image data in the initial contour;
background image region removal means for removing a background image region in the initial contour corrected by said correction means; and
image cutting processing means for performing image cutting processing on the basis of an output from said background image region removal means. - View Dependent Claims (28)
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34. An image extraction apparatus comprising:
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image sensing means for sensing a plurality of images;
image sensing condition control means for controlling an image sensing condition when said image sensing means senses images;
image sensing condition recording/reproduction means for recording the image sensing condition when said image sensing means senses images, and reproducing and outputting the recorded image sensing condition;
image recording means for recording the plurality of images sensed by said image sensing means;
image data conversion means for converting image data of at least one of the plurality of images on the basis of the image sensing condition supplied from said image sensing condition recording/reproduction means;
image data comparison means for comparing the image data of the plurality of images converted by said image data conversion means; and
image cutting means for extracting an image in a specific image region on the basis of a comparison result output from said image data comparison means.
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58. A sensed image processing apparatus comprising:
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image sensing means;
object distance detection means;
template storage means;
template size determination means for determining a size range of a template, which can be reduced/enlarged, on the basis of an output from said object distance detection means; and
similarity evaluation means for evaluating similarity between a template within the size range and an image including an object.
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72. A sensed image processing apparatus comprising:
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image sensing means;
template storage means;
similarity evaluation means;
means for encoding a template sequence obtained by matching evaluation of time-series images from said image sensing means with a plurality of templates in said similarity evaluation means;
model code sequence (codebook) storage means; and
collation means for collating the template sequence and a model code sequence.
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73. An image input apparatus comprising:
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image sensing means for sensing an image for object extraction;
image sensing mode setting means for setting an image sensing mode in which said image sensing means performs object extraction;
image sensing parameter measurement control means for performing measurement and control of an image sensing parameter based on the image sensing mode set by said image sensing mode setting means; and
recording means for recording the image sensing parameter and the image. - View Dependent Claims (76, 77, 78, 80, 81, 82, 83, 84, 85, 86, 88, 90)
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74. An image processing apparatus comprising:
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image sensing means for sensing an image for object extraction;
image sensing parameter measurement control means for performing measurement control of an image sensing parameter based on a pre-set image sensing mode;
recording means for recording the image sensing parameter and the image;
image cutting processing means for cutting out an image by performing predetermined processing of images sensed and generated by said image sensing means under a plurality of image sensing conditions;
control command communication means for performing a communication associated with a control command for controlling an image sensing operation of said image sensing means; and
image transfer means for externally transferring image data generated by said image sensing means. - View Dependent Claims (75, 79, 87)
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89. A computer program product comprising a computer usable medium having computer readable program code means for extracting an object from a sensed image, including:
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computer readable program code means for changing an extraction condition associated with object extraction on the basis of an image sensing condition or an image sensing environment upon image sensing; and
computer readable program code means for extracting the object under an appropriate extraction condition in a predetermined extraction method.
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91. A sensed image processing apparatus comprising:
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image sensing means having image sensing parameter control means for controlling an image sensing parameter, and image sensing mode setting means for setting an image sensing mode;
calculation means having first image processing means for calculating comparison data between a plurality of images each having the controlled image sensing parameter, and second image processing means for classifying an image region by discriminating the calculated comparison data; and
terminal means having data communication means for performing a data communication with said image sensing means, wherein said image sensing parameter control means controls the image sensing parameter on the basis of a signal from said terminal means or a signal from said image sensing mode setting means. - View Dependent Claims (93, 94, 97, 98, 99, 100)
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92. A sensed image processing apparatus comprising:
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image sensing means having image sensing parameter control means for controlling an image sensing parameter, and image processing means for calculating comparison data between a plurality of images each having the controlled image sensing parameter;
calculation means having indication/selection means for indicating an object position in the image; and
terminal means for performing a data communication with said image sensing means, wherein said calculation means generates an image sensing parameter control signal on the basis of an object position signal from said indication/selection means and image data in a predetermined size region having the position as a center, said image sensing parameter control means controls an image sensing condition on the basis of the image sensing parameter control signal, and said terminal means extracts a specific object image by processing an image obtained under the image sensing condition.
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95. A sensed image processing apparatus comprising:
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image sensing means having finder display means;
image display means for displaying an image sensed by said image sensing means;
indication/selection means for indicating an image displayed on said image display means; and
calculation means having region discrimination processing means for discriminating a region of the indicated image, wherein said region discrimination processing means processes image data sensed by said image sensing means, and performs cutting processing having a position or region in an image frame output from said indication/selection means as a center, and said image display means or said finder display means displays an extracted image signal from said calculation means.
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96. A sensed image processing apparatus comprising:
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image sensing means having image sensing parameter control means for controlling an image sensing parameter, and memory means for storing sensed image data;
image display means for displaying an image sensed by said image sensing means;
indication/selection means for indicating the displayed image;
calculation means having region discrimination processing means for discriminating a region of the indicated image; and
terminal means having data communication means for performing a data communication with said image sensing means, wherein said image sensing parameter control means receives control data from said terminal means via said data communication means or from said memory means, said region discrimination processing means calculates comparison data between a plurality of images sensed under at least two image sensing conditions including a standard image sensing condition and a non-standard image sensing condition set by said image sensing parameter control means, and performs cutting processing having a position or region in an image frame output from said indication/selection means as a center, and said image display means displays an image signal output from said calculation means.
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101. A sensed image processing method comprising:
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the image sensing step including the image sensing parameter control step of controlling an image sensing parameter of an image sensing apparatus and the image sensing mode of setting an image sensing mode;
the calculation step including the first image processing step of calculating comparison data between a plurality of images each having the controlled image sensing parameter, and the second image processing step of classifying an image region by discriminating the calculated comparison data; and
the data communication step of performing a data communication between said image sensing apparatus and a terminal device, wherein the image sensing parameter control step includes the step of controlling the image sensing parameter on the basis of a signal from said terminal device or a signal set in the image sensing mode setting step.
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102. A sensed image processing method comprising:
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the image sensing step including the image sensing parameter control step of controlling an image sensing parameter of an image sensing apparatus and the image processing step of calculating comparison data between a plurality of images each having the controlled image sensing parameter;
the calculation step of indicating an object position in the image using an indication/selection device; and
the data communication step of performing a data communication between said image sensing apparatus and a terminal device, wherein the calculation step includes the step of generating an image sensing parameter control signal on the basis of an object position signal from said indication/selection device and image data in a predetermined size region having the position as a center, said image sensing parameter control step includes the step of controlling an image sensing condition on the basis of the image sensing parameter control signal, and said terminal device extracts a specific object image by processing an image obtained under the image sensing condition.
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Specification