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High Dynamic Range Imaging is a inevitable step in machine vision for a high dynamically illuminated environment. In cost-wise aspect it is better to convert the high dynamic image to a low dynamic one with preserving the maximum information with the help of Tone Reproduction Algorithm. Another essential feature in colour based object recognition is colour constancy, especially in identifying metal...
A quick estimation of depth is required by artificial vision systems for their self survival and navigation through the environment. Following the selection strategy of biological vision, known as visual attention, can help in accelerating extraction of depth for important and relevant portions of given scenes. Recent studies on depth perception in biological vision indicate that disparity is computed...
It is an essential factor in the field of automated color image analysis to have an accurate method for image color quality evaluation. Based on the CIELAB color system, S-CIELAB has added a spatial filter process of simulating human visual system and accorded well with human visual system. This study focused on the application of SCIELAB in image color quality evaluation, with an induction of human...
In the print-type steganographic system and watermark, a calibration pattern is arranged around contents where invisible data is embedded, as plural feature points corresponding to between an original image and the scanned image for normalization of the scanned image. However, it is clear that conventional methods interfere with page layout and artwork of contents. In addition, visible calibration...
It is known that the reflectance spectra of both natural and man-made surfaces may be represented efficiently using linear models. A key task is to answer how many basis functions of a linear model are necessary for a given accuracy of representation. While the most common application is the reproduction of color and images, which highly relate to human perception, it is important to understand the...
Maintaining image quality under various lighting conditions is critical to portable multimedia devices. In this paper, an image enhancement algorithm is proposed to deal with extremely dim LCD backlight (or strong ambient light) under which the image often becomes imperceptible. The crux of our idea is to keep the detail content of the image in the visible luminance range. To do that, a two-layer...
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