Interactive color image digitizing system having restricted memory capability
First Claim
1. A process for digitizing a relevant image portion of a colour image comprising the following steps:
- generating a first set of image signals by an initial sampling of said colour image at a selected image resolution;
reducing the number of image signals contained in said first set creating a second set and storing said second set in a memory;
displaying the second set on an interactive work station;
acquiring spatial data with regard to said relevant image portion on said interactive work station;
generating a third set of image signals by resampling said colour image or a portion of said colour image comprising said relevant image portion at said selected image resolution; and
deriving a fourth set of image signals comprising said third set of image signals restricted by said spatial data and storing said fourth set in a memory.
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Abstract
A process is described for digitising the relevant portion of a color image by a system with reduced memory capacity. The color image is scanned twice. The image signals (30) are sub-sampled (I) the first time and spatially reduced (II) the second time to the relevant image portion. The spatial data (35,36) for the relevant image portion are determined on an interactive work station (34), on which the sampled image signals (33) are displayed. Initial sampling and resampling by the scanner take place with the same spatial resolution. By carrying out the sub-sampling and the spatial reduction during scanning, an important saving of memory is realized. Owing to the fact that the color image is digitized in one single step, register faults are avoided.
70 Citations
13 Claims
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1. A process for digitizing a relevant image portion of a colour image comprising the following steps:
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generating a first set of image signals by an initial sampling of said colour image at a selected image resolution; reducing the number of image signals contained in said first set creating a second set and storing said second set in a memory; displaying the second set on an interactive work station; acquiring spatial data with regard to said relevant image portion on said interactive work station; generating a third set of image signals by resampling said colour image or a portion of said colour image comprising said relevant image portion at said selected image resolution; and deriving a fourth set of image signals comprising said third set of image signals restricted by said spatial data and storing said fourth set in a memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification