Pandora International Limited

Steven Brett

There is provided a method of applying colour correction to a video image obtained by scanning photographic film frames, in which each frame on the film is scanned a plurality of times to produce a plurality of constituent frames each containing only part of the data required to represent the image at a relatively high resolution, the constituent frames associated with each film frame are assembled to provide a relatively high resolution video image, and the high resolution images are stored and/or displayed. In the invention, information is stored indicating the relationship between each constituent frame and its associated high resolution image, a colour correction decision is made, and colour correction is applied to one or more of the constituent frames associated with that high resolution image.

High definition color modification

Digital video processing

A digital video processor which is usable as a secondary digital color processor (DCP) with standard-definition digital telecines and is also compatible with high-definition television systems, for correcting video color and other attributes such as pixel location and sharpness. The disclosed video processor has an architecture in which only the pixels and/or regions of a video picture to be modified have any processing applied to them, so that most pixels, which are unmodified, remain free from any potential corruption. It identifies pixels to be modified by means of lookup tables which can be loaded for each frame with data indicating attributes such as hue, saturation, and luminance values or ranges which are to be present in a pixel if that pixel is to be selected for modification, the pixel's attributes being applied to each lookup table as an address. The DCP has multiple channels, with precedence logic to control the priority order of the channels, in order to apply only one particular set of modification increments associated with only one channel, in the event that more than one set of selection attributes are applicable to a given pixel. The system is capable of standard- or reduced-definition modification of portions within a high-definition picture.

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Kent, United Kingdom

Steven Brett