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对整数DCT变换矩阵填充规则加以改进,得到一类新的整数变换基,称为"类整数DCT"变换基。从海量"类整数DCT"变换基中搜索出若干优选变换基,应用于MPEG4编解码实验,经实验测试和数据分析,结果表明优选"类整数DCT"变换基归一化正交矩阵与DCT变换的去相关性能相近,可替代整数DCT变换在图像编码中所起的作用。由于"类整数DCT"变换有完全快速算法,便于硬件实现,应用于图像编码,可降低编码器复杂...
Noise reduction for digital holograms in a discrete cosine transform (DCT) domain
digital hologram noise reduction discrete cosine transform holographic reconstruction
2011/5/9
This paper presents a method for reducing noise in a digital hologram, which occurs during
acquisition. The algorithm proposed initially transforms a digital hologram into frequency-domain
data thro...