Abstract
Depth of field (DOF) rendering is important in computer graphics, especially in image synthesis and virtual reality applications. Traditionally, a filter with size varying kernels is applied to facilitate DOF rendering, however, the kernel size is approximated by rounding, ignoring the fractional parts, thus causing inconsistencies around the edges. In this paper, we proposed to adapt exact kernel size for depth of field rendering, not only the integral part, but also the fractional part of the kernel size are considered. In addition, we proposed a method to speed up the calculation based on integral images. Experiment results indicate that our proposed method is a practical way for depth of field rendering.
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Acknowledgement
This work was supported by National Natural Science Foundation of China (Grant No. 61402205), China Postdoctoral Science Foundation (Grant No. 2015M571688), Jiangsu University (Grant No. 13JDG085), University Science Research Project of Jiangsu Province (Grant No. 16KJB520008), Natural Science Foundation of Jiangsu Province (Grant No. BK20170558), Postgraduate Research & Practice Innovation Program of Jiangsu Province (Grant No. SJCX17_0575).
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Yang, Y., Peng, Y., Bian, H., Zeng, L., Wang, L. (2018). Accurate Depth of Field Rendering with Integral Image. In: Wang, Y., Jiang, Z., Peng, Y. (eds) Image and Graphics Technologies and Applications. IGTA 2018. Communications in Computer and Information Science, vol 875. Springer, Singapore. https://doi.org/10.1007/978-981-13-1702-6_30
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DOI: https://doi.org/10.1007/978-981-13-1702-6_30
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