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'Perfect' displays and 'perfect' image compression in space and time

机译：“ Perfect ”显示和“ Perfect ”图像压缩的时空

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Abstract: Several topics connecting basic vision research to image compression and image quality are discussed: (1) A battery of about 7 specially chosen simple stimuli should be used to tease apart the multiplicity of factors affecting image quality. (2) A 'perfect' static display must be capable of presenting about 135 bits/min$+2$/. This value is based on the need for 3 pixels/min and 15 bits/pixel. (3) Image compression allows the reduction from 135 to about 20 bits/min$+2$/ for perfect image quality. 20 bit/min$+2$/ is the information capacity of human vision. (4) A presumed weakness of the JPEG standard is that it does not allow for Weber's Law nonuniform quantization. We argue that this is an advantage rather than a weakness. (5) It is suggested that all compression studies should report two numbers separately: the amount of compression achieved from quantization and the amount from redundancy coding. (6) The DCT, wavelet and viewprint representations are compared. (7) Problems with extending perceptual losslessness to moving stimuli are discussed. Our approach of working with a 'perfect' image on a 'perfect' display with 'perfect' compression is not directly relevant to the present situation with severely limited channel capacity. Rather than studying perceptually lossless compression we must carry out research to determine what types of lossy transformations are least disturbing to the human observer. Transmission of 'perfect', lossless images will not be practical for many years.!
机译：摘要：讨论了将基本视觉研究与图像压缩和图像质量联系起来的几个主题：（1）应使用大约7种特别选择的简单刺激物来找出影响图像质量的多种因素。 （2）“完美”的静态显示必须能够显示约135位/分钟2 + 2。该值基于对3像素/分钟和15位/像素的需要。 （3）图像压缩允许从135降低到约20 bit / min $ + 2 $ /以获得完美的图像质量。 20 bit / min $ + 2 $ /是人类视觉的信息容量。 （4）JPEG标准的一个假定弱点是它不允许韦伯定律进行非均匀量化。我们认为这是一个优势而不是劣势。 （5）建议所有压缩研究应分别报告两个数字：量化获得的压缩量和冗余编码的量。 （6）比较DCT，小波和视点表示。 （7）讨论了将知觉无损扩展到运动刺激的问题。我们在具有“完美”压缩的“完美”显示器上处理“完美”图像的方法与通道容量严重受限的当前状况没有直接关系。与其研究可感知的无损压缩，不如进行研究以确定哪种类型的有损变换对观察者的干扰最小。传输“完美”，无损的图像很多年都不可行。

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