Image frame detection
AssigneeEastman Kodak Company
InventorJohn Mitch
Life of this patent
Estimating the term…
Abstract
Locations of respective image frames contained on an image recording, such as a continuous color photographic film strip scanned by digitizing opto-electronic scanner are identified by storing scanline data produced by the scanner in a digital database, and processing the stored scanline data to generate a predictor space which is used to identify locations of all the minimally valid frames. Thereafter, the well formed image frames are used to produce statistics which are used to detect the location of other frames.
Claims17
A method of detecting the locations of respective image frames contained on an image recording medium, comprising the steps of:
- (a) scanning said image recording medium so as to produce digital pixel data representative of the contents of each successive scan line of said image recording medium;
- (b) processing such scanned digital pixel data in accordance with predetermined equations, including a scan line sum predictor equations and at least one of a previous delta predictor equation and a next delta predictor equation to generate a predictor space for frame identifiers;
- (c) producing a series of thresholds based upon a predetermined percentile of the predictor space;
- (d) determining all the well formed image frames based upon the thresholds;
- and
- (e) using the determined well formed image frames to produce frame statistics which are used to detect the location of image frames other than the well formed image frames.
A method of detecting the locations of respective image frames contained on an image recording medium, comprising the steps of:
- (a) scanning said image recording medium so as to produce digital pixel data representative of the contents of each successive scan line of said image recording medium;
- (b) processing such scanned digital pixel data in accordance with predetermined equations to generate a predictor space for frame identifiers;
- (c) producing a series of thresholds based upon a predetermined percentile of the predictor space;
- (d) determining all the well formed image frames based upon the thresholds;
- and
- (e) using the determined well formed image frames to produce frame statistics which are used to detect the location of image frames other than the well formed image frames
- wherein the predictor space predetermined equations include scan line sums, neutral, variation, next delta, window delta, and previous delta predictors based on comparison of adjacent scan line sums equations.
An apparatus for detecting the locations of respective image frames contained on an image recording medium comprising:
- (a) means for scanning said image recording medium so as to produce digital pixel data representative of the contents of each successive scan line of said image recording medium;
- (b) means for processing such scanned digital pixel data in accordance with predetermined equations, including a scan line sum predictor equations and at least one of a previous delta predictor equation and a next delta predictor equation to generate a predictor space for frame identifiers;
- (c) means for producing a series of thresholds based upon a predetermined percentile of the predictor space;
- and
- (d) means for determining all the well formed image frames based upon the thresholds and using the determined well formed image frames to produce frame statistics which are used to detect the location of image frames other than the well formed image frames.
An apparatus for detecting the locations of respective image frames contained on an image recording medium comprising:
- (a) means for scanning said image recording medium so as to produce digital pixel data representative of the contents of each successive scan line of said image recording medium;
- (b) means for processing such scanned digital pixel data in accordance with predetermined equations to generate a predictor space for frame identifiers;
- (c) means for producing a series of thresholds based upon a predetermined percentile of the predictor space;
- and
- (d) means for determining all the well formed image frames based upon the thresholds and using the determined well formed image frames to produce frame statistics which are used to detect the location of image frames other than the well formed image frames;
- wherein the predictor space predetermined equations include scan line sums, neutral, variation, next delta, window delta, and previous delta predictors equations.
Dependencies are inferred from the claim text.