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No-reference stereoscopic image quality assessment (NR-SIQA) is an important research issue in three- dimensional researches. In this paper, a novel NR- SIQA method is proposed by analyzing the detail characteristic of the specific distortion type, and distortion-specific features are extracted to describe the distorted stereoscopic image. The relationship between stereoscopic features and subjective...
Subjective quality evaluation is the basis of quality evaluation of stereoscopic images. As the lack of a public and diverse testing database currently, in this paper, a symmetric stereoscopic images database is built. And then the subjective quality of stereoscopic images is analyzed from two aspects, one is the effects of JPEG, JPEG2000, H.264. The other is the comparisons between symmetric and...
With the development of three dimensional media resources, the corresponding intellectual property protection problem also occurs. In this paper, a blind stereoscopic image watermarking algorithm based on the relationship modulation is proposed. Firstly, the original stereoscopic images are divided into non-overlapping blocks respectively, and the polarity of these blocks in left and right images...
The existing disparity map based virtual view rendering may decrease the sharpness of the rendered image, or result in ghosts. In this paper, a new disparity map based virtual view rendering method is proposed. The left and the right view images and their corresponding disparity maps are used to render intermediate virtual view image respectively. Then the two rendered images resulted from the left...
In this paper, a novel four-component weighted gradient-based structural similarity metric is proposed, according to the effects on the edges, smooth and texture for different types of distortion, by adaptively adjusting the weights of four components (strong edge, weak edge, texture region, and smooth region). Experiments show that the proposed metric can provide better assessment performance compared...
A virtual view rendering oriented fast algorithm is proposed to reduce computational complexity of multiview depth video coding. Firstly, the depth image is divided into depth-continuity and depth-discontinuity regions by a macroblock deviation factor. Then, imbalance macroblock mode distribution of depth-continuity regions and effect of image quality degradation in depth-discontinuity regions on...
Reduced-reference (RR) image quality assessment metrics (IQA) evaluate the quality of images by extracting a parameter set from the original reference image and using this set in place of the actual reference image. In this paper, we propose a novel RR-IQA metric based on Contourlet transform. By combining Contourlet transform with a version of the hidden Markov model - Gaussian scale mixtures (GSM),...
A fast macroblock mode selection algorithm based on inter-view global disparity is proposed to improve the encoder efficiency of JMVM, with insignificant degradation in picture quality and bit rate increase. The proposed fast mode selection algorithm promotes the encoding speed through partly searching method when encoding most of the frames in multiview video sequence. The macroblock mode of current...
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