A process and system automatically tracking a region-of-interest for a color correction system
a color correction system and process technology, applied in the field of image processing, can solve the problems of software not being able to automatically track a region, and not being suitable for real-time applications
Inactive Publication Date: 2005-04-07
GU XUEMING HENRY
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AI Technical Summary
Benefits of technology
Enables precise and automatic tracking of color regions of interest across frames, allowing for real-time adjustment and processing, enhancing the capability to apply image processing such as color correction, compression, and noise reduction in a scene-by-scene color correction context.
Problems solved by technology
Such edge detection algorithms rely upon color differences between regions to define the paths and produce odd results if there are discontinuities in the edges of a region, or if the colors defining the regions are not sufficiently dissimilar.
For these and other reasons, such software is not suitable for real time applications such as a scene by scene color corrector.
Moreover, the system as described in this patent is not capable of automatically tracking a region of interest based on its color parameters (hue, saturation, and / or luminance) over a number of frames—the system therein described “morphs” the polygon from a first frame to a final frame of a scene.
Method used
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[0042] Referring now to the drawings, in which like numerals indicate like elements or steps throughout the several figures, FIG. 1 illustrates an image processing system 10 constructed in accordance with the preferred embodiment of the present invention, suitable for carrying out the claimed methods for defining windows for applying image processing and autotracking of color regions of interest.
Preferred Embodiment of Color Correction System
[0043] Although the present invention will be described in the context of a scene by scene digital color corrector, it will be understood that the inventions described herein are not limited to video color correction and are equally useful in other types of systems where there is a need for application of image processing such as image compression, image filtering, noise suppression, animation, and any other type of processing. In particular, the invention is useful in any image application where there is a need to define a region of an image ...
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A system and methods for creating user definable windows for applying image processing, particularly useful in a post-production color correction equipment. The system allows a user of an image processing system such as a scene by scene color corrector to define a color region of interest in an image for purposes of applying image processing only to the region of interest, with automatic tracking of that region of interest over a plurality of frames in a scene. The user defined window, comprising a closed polygon, is converted on a frame-by-frame basis to a matte that is keyed with image processing such as color correction values. The user defined windows can be edited and stored and recalled for use in other frames. The color region of interest is automatically tracked from a beginning frame to the ending frame of a scene, with a vector window defined for each frame, so as to adapt to and compensate for changes in shape, size, and geometry of the region of interest during the succession of frames in the scene.
Description
[0001] This application is a divisional of application Ser. No. 09 / 282,913, filed Mar. 31, 1999, now U.S. Pat. No. ______, entitled AUTOMATIC REGION-OF-INTEREST TRACKING FOR A COLOR CORRECTION SYSTEM, which is incorporated herein in its entirety by reference.TECHNICAL FIELD [0002] The present invention relates generally to image processing, and more particularly relates to systems and methods that allow a user of an image processing system such as a scene by scene color corrector to define a color region of interest in an image for purposes of applying image processing only to the region of interest, with automatic tracking of that region of interest over a plurality of frames in a scene. BACKGROUND OF THE INVENTION [0003] In certain types of image processing systems, especially color correction systems employed in post-production equipment, system operators observe an image on a video monitor, adjust color and other parameters of the image until it is aesthetically satisfactory, st...
Claims
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IPC IPC(8): G06T7/20G06T11/60G06T15/50G06T15/60G09G5/00G09G5/02
CPCG06K9/2081G06T11/60G06T7/2033G06T7/246G06V10/235
InventorGU, XUEMING HENRY
OwnerGU XUEMING HENRY