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arXiv 2007.06483cs.CVcs.DC
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基于GPU的HDR图像平移配准加速算法

Accelerating Translational Image Registration for HDR Images on GPU

Middle East Technical University(中东技术大学)

Kadir Cenk Alpay, Kadir Berkay Aydemir, Alptekin Temizel

摘要:

高动态范围(HDR)图像是使用场景的多次曝光生成的。当使用手持相机捕捉静态场景时,需要通过在两个维度上全局移动每个图像来对齐这些图像。为了实现快速和稳健的对齐,通常使用中值阈值位图(MTB)和创建图像金字塔来计算移位量。在这项研究中,我们优化这些计算使用并行处理的方法,利用GPU。实验结果表明,该实现实现的速度高达6.24倍的基线多线程CPU实现的对齐的一个图像对。源代码可在https://github.com/kadircenk/WardMTBCuda上获得

英文摘要:

High Dynamic Range (HDR) images are generated using multiple exposures of a scene. When a hand-held camera is used to capture a static scene, these images need to be aligned by globally shifting each image in both dimensions. For a fast and robust alignment, the shift amount is commonly calculated using Median Threshold Bitmaps (MTB) and creating an image pyramid. In this study, we optimize these computations using a parallel processing approach utilizing GPU. Experimental evaluation shows that the proposed implementation achieves a speed-up of up to 6.24 times over the baseline multi-threaded CPU implementation on the alignment of one image pair. The source code is available at https://github.com/kadircenk/WardMTBCuda

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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