Method for analyzing images and for correcting the values of video signals
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United States of America Patent
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Jan 27, 2004
Grant Date -
N/A
app pub date -
Nov 28, 2000
filing date -
Mar 23, 1998
priority date (Note) -
Expired
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Abstract
In a method for image analysis and correction of video signal values in the processing of video films, whereby analysis values with respect to image range, gradation and color cast of the individual frames of the video film are identified by the image analysis of the video signal values, and the correction of the video signal values is implemented on the basis of the analysis values, the video signal values are initially transformed according to a three-dimensional conversion function into the video signal values of an independent and sensation-conforming, equidistant color space. For each frame of a video sequence composed of a plurality of frames, at least one analysis value is determined on the basis of the transformed video signal values. At least one analysis values representative of the video sequence is formed by forming the average of the corresponding analysis values of the frames of the video sequence.
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