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With the popularity of mobile devices such as mobile phones and cameras, zooming and displaying an arbitrary region of interest (ROI) from a high-resolution video has gained considerable importance. In this study, we implement two methods—partial decoding and tiled encoding—for ROI-based streaming in High Efficiency Video Coding (HEVC). In partial decoding, only the ROI and dependence area are decoded;...
High-definition (HD) and super-high-definition (SHD) videos become more and more popular for various video applications, including video capture and playback on portable devices. Because of the resolution mismatch between HD/SHD video and the low resolution screen of portable devices, the video is fully decoded and then sown-sampled for the display, which causes a waste of both computational power...
In this paper, a hardware-efficient fast algorithm with a lossless frame recompression scheme for large search range (SR) motion estimation (ME) utilized in ultra high definition video encoder is presented. To ensure high ME quality for hierarchical motion search, the advanced hierarchical ME scheme which processes the multi-resolution search with a coarse-to-fine strategy in parallel is proposed...
Elliptical object detection in color images is an important step of many image recognition systems. In this paper, we present a novel approach to accurately detect elliptical objects in color images. The proposed method has an important feature of integrating color image edge detection result with a novel ellipse parameter estimation algorithm efficiently. First, we utilize an elaborate edge detection...
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