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Reconstructing Images from Trichromatic Samples: From Basic Research to Practical Applications

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The human retina encodes information about images through the responses of three classes of photoreceptor, often referred to as the L, M, and S cones. These photoreceptors are arranged in three interleaved mosaics; at any one retinal location only a single cone type samples the retinal image. To create our percept of a continuous colored world, the visual system must reconstruct the responses of the missing two cone types at each retinal location. The algorithm that performs this reconstruction works very well—we rarely perceive artifacts that arise from the interleaved sampling arrangement.

Most CCD based color cameras employ the same interleaved sampling architecture as the human retina. Yet for CCD cameras, color artifacts are quite common near sharp luminance boundaries. CCD cameras are more susceptible to these artifacts because their reconstruction algorithms are not as successful as the one employed by the human visual system.

This talk will begin by reviewing basic research designed to elucidate reconstruction by the human visual system. We will then show how ideas that emerged from the basic research have led to a new algorithm for processing images acquired with CCD cameras.
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Document Type: Research Article

Publication date: January 1, 1995

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  • CIC is the premier annual technical gathering for scientists, technologists, and engineers working in the areas of color science and systems, and their application to color imaging. Participants represent disciplines ranging from psychophysics, optical physics, image processing, color science to graphic arts, systems engineering, and hardware and software development. While a broad mix of professional interests is the hallmark of these conferences, the focus is color. CICs traditionally offer two days of short courses followed by three days of technical sessions that include three keynotes, an evening lecture, a vibrant interactive (poster) papers session, and workshops. An endearing symbol of the meeting is the Cactus Award, given each year to the author(s) of the best interactive paper; there are also Best Paper and Best Student Paper awards.

    Please note: for Purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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