Video Frame Image Processing Modules for Scratch and Color Cast Repair

The patent segments the scratch repair process into distinct modules: variance calculation module to identify scratch regions, dedicated scratch repair module to remove scratches while preserving edges, and separate color cast correction module. This segmentation allows each module to specialize in specific tasks, improving overall precision without requiring sequential processing of general-purpose algorithms.

The patent performs preliminary variance calculation to identify and isolate scratch regions before applying repair operations. By pre-processing the image to mark scratch locations through variance analysis between original and filtered images, the system prepares targeted repair zones in advance, enabling faster and more precise repair without trial-and-error processing.

The patent applies local quality by implementing separate correction strategies for different image regions. The color cast correction module specifically targets regions identified as having color casts, applying color balance adjustments only where needed rather than uniformly across the entire image. This localized approach improves correction accuracy while reducing unnecessary processing complexity.

The patent introduces an intermediary variance calculation module that acts as a mediator between the original image and the color correction process. This intermediary step calculates variance to identify regions requiring color correction, providing precise guidance to the color cast correction module and enabling accurate correction without requiring complex manual intervention or overly sophisticated processing systems.

The patent merges multiple processing functions into an integrated system where the variance calculation module serves dual purposes: identifying both scratch regions and color cast regions. The scratch repair module and color cast correction module operate in a coordinated manner with shared preprocessing results, eliminating redundant calculations and enabling parallel processing of different repair tasks while maintaining comprehensive repair coverage.

The patent performs preliminary variance calculation and region identification once at the beginning of the processing pipeline. These preliminary results are then reused by both the scratch repair module and the color cast correction module, avoiding duplicate analysis and enabling efficient parallel processing. By preparing region masks and variance data in advance, the system ensures complete repair coverage without requiring multiple sequential passes through the entire image.