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| 20080218630 | Content-Dependent Scan Rate Converter with Adaptive Noise Reduction - A content-dependent scan rate converter with adaptive noise reduction that provides a highly integrated, implementation efficient de-interlacer. By identifying and using redundant information from the image (motion values and edge directions), this scan rate converter is able to perform the tasks of film-mode detection, motion-adaptive scan rate conversion, and content-dependent video noise reduction. Adaptive video noise reduction is incorporated in the process where temporal noise reduction is performed on the still parts of the image, thus preserving high detail spatial information, and data-adaptive spatial noise reduction is performed on the moving parts of the image. A low-pass filter is used in flat fields to smooth out Gaussian noise and a direction-dependent median filter is used in the presence of impulsive noise or an edge. Therefore, the selected spatial filter is optimized for the particular pixel that is being processed to maintain crisp edges. | 09-11-2008 |
| 20100246992 | Content-Dependent Scan Rate Converter with Adaptive Noise Reduction - A content-dependent scan rate converter with adaptive noise reduction that provides a highly integrated, implementation efficient de-interlacer. By identifying and using redundant information from the image (motion values and edge directions), this scan rate converter is able to perform the tasks of film-mode detection, motion-adaptive scan rate conversion, and content-dependent video noise reduction. Adaptive video noise reduction is incorporated in the process where temporal noise reduction is performed on the still parts of the image, thus preserving high detail spatial information, and data-adaptive spatial noise reduction is performed on the moving parts of the image. A low-pass filter is used in flat fields to smooth out Gaussian noise and a direction-dependent median filter is used in the presence of impulsive noise or an edge. Therefore, the selected spatial filter is optimized for the particular pixel that is being processed to maintain crisp edges. | 09-30-2010 |
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| 20090238448 | System and Method for Local Value Adjustment - In accordance with the teachings of the present invention, a system and method for local value adjustment are provided. In one embodiment, the method includes identifying a hue, saturation, and brightness value for each pixel of an image, determining whether the hue and saturation for each pixel fall within a first predetermined set of hue and saturation combinations, determining whether the brightness value for each pixel of the image falls within a predetermined set of brightness values, and selectively applying a gain to the saturation of each pixel based upon the determination of whether the hue and saturation value of the pixel falls within the first predetermined set of hue and saturation combinations and the determination of whether the brightness value of the pixel falls within the predetermined set of brightness values. The method further comprises decimating the image into multiple localized regions, determining a mean brightness value for each localized region, determining whether the hue and saturation for each pixel fall within a second predetermined set of hue and saturation combinations, and selectively increasing the perceived contrast of the image around the mean brightness value for each localized region by applying a transfer function to each pixel of the image based upon the determination of whether the hue and saturation of the pixel fall within the second predetermined set of hue and saturation combinations. | 09-24-2009 |
| 20090322940 | Apparatus and Method for Film Source Reconstruction - A method for film reconstruction includes identifying motion tear artifacts within a plurality of video fields of a stream of video fields. The motion tear artifacts identified by analyzing the video fields using fuzzy logic. The method also includes comparing the analysis of one video field to the analysis of an immediately preceding video field to determine whether there is a relatively high level of motion tear artifacts within the video field or a relatively low level of motion tear artifacts within the video field. The method further includes identifying a pattern of temporal periodicity for the comparisons. The method also includes determining the cadence of the stream of video fields based on the pattern of temporal periodicity. | 12-31-2009 |
| 20100079503 | Color Correction Based on Light Intensity in Imaging Systems - In accordance with a particular embodiment of the present disclosure, color correction based on light intensity in imaging systems may be accomplished by applying a color correction data structure to color component values. | 04-01-2010 |
| 20100158405 | Aspect Ratio Distortion Minimization - According to one embodiment of the invention, a method is provided for aspect ratio distortion minimization. The method includes receiving input pixels from a video source. The method then determines an input position and scale factor for each input pixel. A count value determines that a pixel should be outputted. A polyphase finite impulse response filter is centered on a particular input pixel based on the count value. An output pixel is generated using the polyphase finite response filter on a particular input pixel based on the count value and output pixels are outputted. | 06-24-2010 |
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| 20090066620 | Adaptive Pulse-Width Modulated Sequences for Sequential Color Display Systems - Adaptive pulse-width modulated sequences for sequential color display systems and methods. A method for displaying an image comprises receiving the image, computing a duty cycle for the image, generating a color sequence based on the computed duty cycle, and displaying the image using the color sequence. The generating comprises assigning a color cycle order to display time blocks in the color sequence, and assigning bitplane states for each display time block in the color sequence. | 03-12-2009 |
| 20090066718 | System and Method for Image-based Color Sequence Reallocation - System and method for image-based color sequence reallocation in sequential color display systems. A method comprises generating a color signal from an image to be displayed, wherein the color signal contains light intensity information, computing percentages of the color sequence to be allocated to each color in a set of colors in a sequential color display system, wherein the computing is based on the light intensity information, allocating the color sequence based on the computed percentages, and displaying the image using the color sequence. The allocation of the color sequence based on the image allows for the elimination of color intensities that are greater than needed in displaying the image. Portions of the color sequence formerly used to display the eliminated color intensities may be used to display colors with usable intensities, thereby increasing the brightness of images. | 03-12-2009 |
| 20090304284 | NOISE ROBUST CONTRAST-ENHANCEMENT ENGINE EMPLOYING IIR FILTERS - A noise robust contrast-enhancement engine utilizes low-pass infinite-impulse-response filters for enhancing the contrast while preventing noise amplification in video/image signals. | 12-10-2009 |
