Patent application number | Description | Published |
20120307115 | COLOR INTERPOLATION SYSTEM AND METHOD THEREOF - A color interpolation system is disclosed. An enhancement unit receives raw signals from an image sensor, and then processes the raw signals to output an enhanced first signal. A first interpolation unit receives and processes a raw first signal and accordingly outputs an interpolated first signal. A gain generator generates an enhancement gain according to the enhanced first signal and the interpolated first signal. | 12-06-2012 |
20130077858 | IMAGE PROCESSING MODULE AND IMAGE PROCESSING METHOD - An image processing module is provided. A de-mosaic unit in the image processing module includes an edge direction detection unit and a multi-pixel directional interpolation unit. The edge direction detection unit is used to determine an edge direction of a central pixel of the pixel array. The multi-pixels directional interpolation unit is used to determine at least one missing color value of the central pixel based on the edge direction, and determine at least one missing color value of the neighboring pixels based on the edge direction. An image enhancement unit in the image processing module is connected to the de-mosaic unit. | 03-28-2013 |
20130077860 | IMAGE SIGNAL PROCESSOR AND METHOD FOR IMAGE ENHANCEMENT - An image signal processor for image enhancement is provided. The image signal processor receives a first, a second, and a third component of an RGB signal of each pixel of an image, and has: an image enhancer for performing image enhancement on the first component of the RGB signal to produce a first enhanced component of the RGB signal; a gain generator, coupled to the image enhancer, for producing an enhancement gain based on the first component and the first enhanced component of the RGB signal; and a gain multiplier, coupled to the gain generator, for performing image enhancement on the second and the third component based on the enhancement gain to produce a second and a third enhanced component. | 03-28-2013 |
20140376805 | METHOD FOR DEMOSAICKING - A method for demosaicking a digital image is provided. Pixels of the digital image are processed in an order from the upper-left to lower-right of the digital image. If a current-processed pixel is a second color or a third color, a first sub-window centered at the current-processed pixel is generated. A first mask is used to select a first plurality of prior-processed pixels. A set of direction weightings of the current-processed pixel is calculated according to stored direction weightings of the first plurality of prior-processed pixels. An interpolating direction of the current-processed pixel is determined according to the set of direction weightings of the current-processed pixel. A value of a first color for the current-processed pixel is calculated based on the set of direction weightings of the current-processed pixel and values of the first color of pixels of the first color in the first sub-window. | 12-25-2014 |
20150077599 | LENS SHADING CORRECTION METHOD AND IMAGE SIGNAL PROCESSOR FOR PERFORMING THE SAME - A lens shading correction method for pixels of an image is provided. The method includes the steps of: inputting coordinates of the pixels and setting a threshold range on the image; providing a first gain function and a second gain function, each relating the coordinates of the pixels to brightness gains; performing the first gain function on the pixels located at the interior of the threshold range for calculating the brightness gains; and performing a blended gain function on the pixels located at the exterior of the threshold range for calculating the brightness gains, wherein the blended gain function is the combination of the first gain function and the second gain function. | 03-19-2015 |
20150093025 | IMAGE PROCESSING METHOD AND IMAGE PROCESSING DEVICE - An image processing module is provided. A de-mosaic unit in the image processing module includes an edge direction detection unit and a multi-pixel directional interpolation unit. The edge direction detection unit is used to determine a first color row luminance difference according to a plurality of first color pixels of a pixel row of raw data, and determine a first color column luminance difference according to a plurality of first color pixels of a pixel column of raw data. The multi-pixels directional interpolation unit is used to determine pixel luminance of a third color array according to the first color column luminance difference, the first color row luminance difference, the third color pixels adjacent to a first color pixel and the third color pixels adjacent to a second color pixel. | 04-02-2015 |
20150116525 | METHOD FOR GENERATING HIGH DYNAMIC RANGE IMAGES - The present disclosure provides a method for generating HDR images. Steps of the method include capturing a spatially varying exposure image data of a scene by an image sensing array using a first exposure value and a second exposure value, wherein the first exposure value is larger than the second exposure value; re-sampling the spatially varying exposure image data to obtain a first image data corresponding to the first exposure value and second image data corresponding to the second exposure value; determining a motion index of each pixel of a HDR image data according to the first image data and the second image data; determining a pixel value of each pixel of the HDR image data according to a corresponding first pixel value of the first image data, a corresponding second pixel value of the second image data and the motion index; and outputting the HDR image data. | 04-30-2015 |
20150281666 | IMAGE SENSOR EQUIPPED WITH ADDITIONAL GROUP OF SELECTIVELY TRANSMISSIVE FILTERS FOR ILLUMINANT ESTIMATION, AND ASSOCIATED ILLUMINANT ESTIMATION METHOD - An image sensor includes a two dimensional array of pixel elements, a color filter array, and a digital circuit. The color filter array is superimposed on and in registration with the two dimensional array of pixel elements. The color filter array includes a first group of selectively transmissive filters and a second group of selectively transmissive filters. The first group of selectively transmissive filters is arranged to selectively transmit spectral energy in M colors of the visible spectrum, wherein M is larger than two. The second group of selectively transmissive filters is arranged to selectively transmit spectral energy in N colors of the visible spectrum, wherein any selectively transmissive filter of the first and the second groups of selectively transmissive filters is arranged to transmit spectral energy in one specific color of the visible spectrum, and N is larger than M. An associated illuminant estimation method is also provided. | 10-01-2015 |