In a digital still camera (DSC) a plurality of individual RGB filter elements each overly a corresponding one of a plurality of photosensitive elements of an image sensor such as an array of charge-coupled devices (CCDs). A coated mirror is positioned along a light path between a lens and the image sensor for shifting the light transmitted through the lens so that a portion of the incident light that would otherwise fall on a single photosensitive element is divided between at least two adjacent photosensitive elements. The plurality of individual RGB filter elements are arranged in a predetermined mosaic pattern between the lens and the image sensor for permitting the photosensitive elements to detect the intensity of the light incident thereon in a manner that allows a high quality color image to be reproduced. A processing circuit is mounted in the housing and is connected to the image sensor for processing the output signals from the image sensor. A control circuit is mounted in the housing and is connected to the processing circuit for generating a color digital still image file and storing the file in a memory. Blurring and undesirable artifacts such as color fringing at the edges of the color digital still image are reduced.
A method and apparatus provide edge enhancements as part of a demosaicing process in which an image is captured. By providing edge enhancements as part of the demosaicing process, the edge enhancement process has access to unaltered spatial and chromatic information contained in the raw captured image data.
