Description: The bilateral filter is a nonlinear filter that does spatial averaging without smoothing edges. It has shown to be an effective image denoising technique. It also can be applied to the blocking artifacts reduction. An important issue with the application of the bilateral filter is the selection of the filter parameters, which affect the results significantly. Another research interest of bilateral filter is acceleration of the computation speed. Platform: |
Size: 33792 |
Author:liu |
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Description: 直方图均衡能有效地对数字图像进行增强处理，其主要缺点是处理后的数字图像大量损失灰度层次，且增强力度不够．提出了在子块部分重叠直方图均衡的基础上，引入保留灰度级直方图均衡 理的方法，使得处理后 的图像对比度得到较大的增强，又不损失灰 度级，且相邻像素间灰度过渡平 ，图像柔和、真实．针对处理后方块效应严 重的图像，依据人眼的视觉特性和数字图像数据的特，提出了自适应行列分比例方法来有效消除块效应．-Histogram equalization can effectively enhance the digital image processing, its main drawback is the treatment of significant loss of gray-scale digital image level, and strengthen weak. Proposed overlap in the sub-block histogram equalization, based on the introduction of gray-scale histogram equalization reserves management approach, making the processed image contrast is greatly enhanced, without loss of gray-scale, and the adjacent pixels transition level grayscale, image soft and true. Dealing with the serious effects of the image block, based on human visual characteristics and the characteristics of digital image data, the percentage of the ranks of proposed adaptive method to effectively reduce blocking artifacts. Platform: |
Size: 181248 |
Author:王一 |
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Description: Matlab Code for:
Adaptive post-filtering for reducing blocking and ringing artifacts in low bit-rate video coding
in Signal Processing: Image Communication 17 (2002) 525–535 Platform: |
Size: 2048 |
Author:EhsanNadernejad |
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Description: This paper represents a new algorithm to measure the blocking artifacts of videos by
analyzing the distortions of local properties of image signals like dominant edge
magnitude and direction. Platform: |
Size: 1144832 |
Author:MEHEDI |
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Description: 一种适用于图像的压缩感知采样策略和重建算法，采样策略是基于块的图像稀疏采样矩阵，重建算法为smoothed projected Landweber（SPL）迭代算法。-BCS-SPL combines block-based compressed-sensing sampling (BCS) of an image with a smoothed projected-Landweber (SPL) iterative reconstruction. Sampling is driven by random matrices applied on a block-by-block basis, while the reconstruction is a variant of projected Landweber (PL) reconstruction (also known as iterative hard thresholding (IHT)) that incorporates a smoothing operation (Wiener filtering) intended to reducing blocking artifacts. In essence, this filtering operation imposes smoothness in addition to the sparsity inherent to PL. Platform: |
Size: 1163264 |
Author:孔德地 |
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Description: One of the major drawbacks of the block-based DCT compression methods is that they may result in visible artifacts at block boundaries due to coarse quantization of the coefficients. -Simulation results show that the proposed algorithm significantly reduces the blocking artifacts of still and video images as judged by both objective and subjective measures. Platform: |
Size: 348160 |
Author:huyuan |
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Description: Blocking artifacts continue to be among the most serious defects that occur in images and video streams compressed to low bit rates using block discrete cosine transform (DCT)-based compression standards (e.g., JPEG, MPEG, and H.263) Platform: |
Size: 707584 |
Author:huyuan |
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Description: BCS-SPL将图像的基于块的压缩感测采样（BCS）与平滑的投影Landweber（SPL）迭代重建相结合。采样是通过逐块应用随机矩阵来驱动的，而重建则是预期的Landweber（PL）重建（也称为迭代硬阈值（IHT））的变体，其结合平滑操作（维纳滤波）减少块效应。实质上，除了PL所固有的稀疏性之外，这种滤波操作还能提供平滑性。(BCS-SPL combines block-based compressed-sensing sampling (BCS) of an image with a smoothed projected-Landweber (SPL) iterative reconstruction. Sampling is driven by random matrices applied on a block-by-block basis, while the reconstruction is a variant of projected Landweber (PL) reconstruction (also known as iterative hard thresholding (IHT)) that incorporates a smoothing operation (Wiener filtering) intended to reducing blocking artifacts. In essence, this filtering operation imposes smoothness in addition to the sparsity inherent to PL.) Platform: |
Size: 1162240 |
Author:钟易xxxx |
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Search - blocking artifacts