H.264 visual perceptual coding in uniform analyzing and encoding framework

2012 ◽  
Author(s):  
Yayu Zheng ◽  
Wei Zhu ◽  
Peng Chen
Keyword(s):  
Perceptual Coding

scholarly journals Real-Time Compression for Tactile Internet Data Streams

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1924
Author(s):  
Patrick Seeling ◽  
Martin Reisslein ◽  
Frank H. P. Fitzek
Keyword(s):  
Real Time ◽  
Data Streams ◽  
Control Loop ◽  
Real World Data ◽  
Perceptual Coding ◽  
Great Flexibility ◽  
Broad Application ◽  
Time Compression ◽  
Perceptual Threshold ◽  
Selection Of

The Tactile Internet will require ultra-low latencies for combining machines and humans in systems where humans are in the control loop. Real-time and perceptual coding in these systems commonly require content-specific approaches. We present a generic approach based on deliberately reduced number accuracy and evaluate the trade-off between savings achieved and errors introduced with real-world data for kinesthetic movement and tele-surgery. Our combination of bitplane-level accuracy adaptability with perceptual threshold-based limits allows for great flexibility in broad application scenarios. Combining the attainable savings with the relatively small introduced errors enables the optimal selection of a working point for the method in actual implementations.

Stereoscopic Size Discrimination in Disturbed and Non-Disturbed Children

1973 ◽  
Vol 36 (1) ◽  
pp. 323-328 ◽  
Author(s):  
Thomas E. Webb
Keyword(s):  
Discrimination Task ◽  
Response Variability ◽  
Size Discrimination ◽  
Perceptual Coding ◽  
Normal Controls

10 children with withdrawn personality disturbances showed significantly greater response variability on a stereoscopic size-discrimination task than did children with very aggressive conduct disturbances or normal controls. It is proposed that mechanisms associated with the reliable initiation and maintenance of cognition are more salient than those involving primary sensory/perceptual coding.

Classified perceptual coding with adaptive quantization

1996 ◽  
Vol 6 (4) ◽  
pp. 375-388 ◽  
Author(s):  
Soon Hie Tan ◽  
K.K. Pang ◽  
K.N. Ngan
Keyword(s):  
Perceptual Coding ◽  
Adaptive Quantization

scholarly journals Quality-Oriented Perceptual HEVC Based on the Spatiotemporal Saliency Detection Model

Entropy ◽  
2019 ◽  
Vol 21 (2) ◽  
pp. 165 ◽  
Author(s):  
Xiantao Jiang ◽  
Tian Song ◽  
Daqi Zhu ◽  
Takafumi Katayama ◽  
Lu Wang
Keyword(s):  
Video Coding ◽  
High Efficiency ◽  
Saliency Detection ◽  
Saliency Map ◽  
High Efficiency Video Coding ◽  
High Definition ◽  
Perceptual Coding ◽  
Coding Scheme ◽  
Saliency Model ◽  
Video Saliency

Perceptual video coding (PVC) can provide a lower bitrate with the same visual quality compared with traditional H.265/high efficiency video coding (HEVC). In this work, a novel H.265/HEVC-compliant PVC framework is proposed based on the video saliency model. Firstly, both an effective and efficient spatiotemporal saliency model is used to generate a video saliency map. Secondly, a perceptual coding scheme is developed based on the saliency map. A saliency-based quantization control algorithm is proposed to reduce the bitrate. Finally, the simulation results demonstrate that the proposed perceptual coding scheme shows its superiority in objective and subjective tests, achieving up to a 9.46% bitrate reduction with negligible subjective and objective quality loss. The advantage of the proposed method is the high quality adapted for a high-definition video application.

scholarly journals Enhancing LTW image encoder with perceptual coding and GPU-optimized 2D-DWT transform

2013 ◽  
Vol 2013 (1) ◽  
Author(s):  
Miguel O Martínez-Rach ◽  
Otoniel López-Granado ◽  
Vicente Galiano ◽  
Hector Migallón ◽  
Jesús Llor ◽  
...  
Keyword(s):  
Perceptual Coding
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