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In this paper, we propose surrounding adaptive tone mapping in displayed images under ambient light. Under strong ambient light, the displayed images on the screen are darkly perceived by human eyes, especially in dark regions. We deal with the ambient light problem in mobile devices by brightness enhancement and adaptive tone mapping. First, we perform brightness compensation in dark regions using...
In this paper, we propose power-constrained backlight scaling for LCDs using brightness compensated contrast-tone mapping operation, called BCCTMO. First, we increase pixel values to compensate for the reduced brightness caused by backlight dimming for power saving through maintaining the perceived luminance. Then, we perform a contrast-tone mapping operation (CTMO) to reduce the information loss...
Agricultural food's logistics needs to be efficient and to provide assurance on the safety and quality of its products which consumers could trust. This paper designs a machine vision system by which fruits or vegetables can be detected for defects and damages during transportation and storage. The color histogram extracted in local image patch is used as image feature and the Linear SVM (Support...
External appearance is one of the most significant attributes for fruits when consumers decide to choose or reject them, thus packinghouses need to adopt appropriate systems that are capable of detecting the skin defects for fruits before packing them into batches and reaching the end consumers. For this purpose, this paper proposes a new method to detect fruit skin defects by using machine vision...
We present an augmented reality system based on Kinect for on-line handbag shopping. The users can virtually try on different handbags on a TV screen at home. They can interact with the virtual handbags naturally, such as sliding a handbag to different positions on their arms and rotating a handbag to see it from different angles. The users can also see how the handbags fit them in different virtual...
Gray-based features are widely used for computer vision applications, even when color data is a very important source. In this paper, we present a novel approach for detecting corners based on color information in images. To fully exploit the color data, a color invariant to saturation is first built based on dichromatic reflection model. The invariant is an object reflectance property independent...
Virtual view synthesis has been considered as a crucial technique in three-dimensional television (3DTV) display, where depth-image-based rendering (DIBR) is a key technology. In order to improve the virtual image quality, a method without preprocessing the depth image is proposed. During the synthesis, the hole-flag map is fully utilized. A Horizontal, Vertical and Diagonal Extrapolation (HVDE) using...
Airborne LiDAR data can be used to create 3D terrain models useful in augmented or virtual reality in which real-world landscapes are incorporated. Automatic generation of 3D models of man-made structures such as buildings is essential for creating these detailed models. We present a method that builds a 3D mesh, segments the triangles, and forms planar facets that correspond to a roof structure of...
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