Image freezing unit for obtaining still image at a precise timing from image data obtained by the imaging means
First Claim
1. An image freezing unit comprising:
- an imaging means for imaging an object;
an image data storing means for storing image data consisting of a plurality of still images obtained by said imaging means;
a variation calculation means for calculating the variation based on a relative position of said object and said imaging means on the basis of said still images consisting of said image data stored in said image data storage means;
a variation latch means for holding said variation calculated by said variation calculation means;
an image detection means for detecting said still image based on said variation held by said variation latch means; and
a control means for controlling said image data storage means on the basis of the detected result of said image detection means.
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Abstract
A freezing unit of the present invention includes a color discrepant magnitude detection unit for accumulating the color corrected magnitude for each pixel output from a color discrepancy correction circuit, and detecting it as the color discrepant magnitude for one field. The freezing unit also includes a comparator circuit including a memory for storing the color discrepant magnitudes for sixteen fields, and a comparator for comparing the color discrepant magnitudes for sixteen fields to search a field with the least color discrepant magnitude, and a memory for storing sixteen field images. The freezing unit further includes a reference position selection circuit for selecting the reference position of the image by the freezing signal, and an image selection circuit for selecting the address of an image of a field with the least color discrepant magnitude.
82 Citations
17 Claims
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1. An image freezing unit comprising:
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an imaging means for imaging an object; an image data storing means for storing image data consisting of a plurality of still images obtained by said imaging means; a variation calculation means for calculating the variation based on a relative position of said object and said imaging means on the basis of said still images consisting of said image data stored in said image data storage means; a variation latch means for holding said variation calculated by said variation calculation means; an image detection means for detecting said still image based on said variation held by said variation latch means; and a control means for controlling said image data storage means on the basis of the detected result of said image detection means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An endoscope image freezing unit comprising:
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an endoscope having an imaging means for imaging an object; an image data storage means for storing image data consisting of a plurality of still images obtained by said endoscope; a variation calculation means for calculating the variation based on a relative position of said object and said imaging means on the basis of said still images composed of said image data stored in said image data storage means; a variation latch means for holding said variation calculated by said variation calculation means; an image detection means for detecting said still image based on said variation held by said variation latch means; and a control means for controlling said image data storage means on the basis of the detected result of said image detection means.
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Specification