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Reconfigurable processors (RP) such as Samsung Reconfigurable Processor (SRP) are best suited for wide range of embedded DSP application domains such as image, audio, video and vision processing. It provides great flexibility of hardware reconfigurability through software solution which provides high-performance computing with low-energy and fast time-to-market. Power consumption of the processor...
In this paper, we propose a new fast spatiotemporal denoising scheme. The noise removal is achieved hierarchically in a multi-resolution framework which is combined with image registration and temporal bilateral filtering. The proposed scheme generates satisfactory results without ghost-artifact and it requires much lower computational complexity compared with other methods.
This paper presents a ghosts-free pseudo-multiframe (MF) high dynamic range (HDR) algorithm inputting real on-site multiple exposures. To this end, first a set of synthetic exposures are generated by mapping a reference exposure with onlinemodeled brightness transfer functions (BTFs), which are determined through histogram matching from the reference exposure to other exposures. Such a set of synthetic...
Mobile 3D graphics use tile-based rendering algorithm in order to lower power consumption. For rendering tile by tile in the tile-based rendering, tile-binning process is inevitable and has to store the results of geometry processing into scene buffer, which causes memory access severely. Several methods were proposed to reduce memory bandwidth for tile-binning process. However, these memory-bandwidth...
This paper presents a new low-light multi-frame fusion algorithm to get a bright and clear shot even under dark conditions. To this end, using multiple short-exposure images and one proper-exposure blurry image as an input, a new hierarchical block-wise temporal noise filtering is done. Finally, an online image restoration of the denoising result is conducted along with the blurry image input. Test...
In this paper, a novel panoramic imaging method is presented which can compensate tone differences between images precisely by estimating ghost pixels in the overlap area. The method compensates the overlapped images bilaterally, then it prevents a panoramic image from getting darker or lighter as images are stitched. Therefore, the proposed method allows the overall panorama to keep the proper mid-tone,...
We propose a simple ghost-free exposure fusion algorithm in which three (over-, mid-, under-) exposures are input for fast embedded HDR imaging. Previous methods in this area require a complicated post-processing, such as morphological operations and large size kernel operations. To remove ghost artifacts successfully even with a low computing power, first of all an over-exposure input is set as a...
A scheduler for high performance systems containing mixed applications of both real-time multimedia and non real-time applications is proposed. The requirements of our proposed scheduler are twofold, i) all tasks, although the task is a non real-time task with a lower priority, never meet a starvation. ii) any tasks with a higher priority must occupy more CPU resource than any other tasks with lower...
This paper proposes new memory interface architecture to overcome huge SDRAM bandwidth requirements of video decoders. To improve the memory efficiency, tile based memory access method and pixel cache are adopted. In addition to large data transfer cycle, extra overhead cycles takes great part of the heavy memory bandwidth requirement. The overhead cycles are caused by two reasons- the one is due...
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