Matches in SemOpenAlex for { <https://semopenalex.org/work/W1981029252> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W1981029252 abstract "The information gathering capacity of the visual system can be specified in units of bits/mm2. The fall-off in sensitivity of the human visual system at high spatial frequencies allows a reduction in the bits/mm2 needed to specify an image. A variety of compression schemes attempt to achieve a further reduction in the number of bit/mm2 while maintaining perceptual losslessness. This paper makes the point that whenever one reports the results of an image compression study, numbers should be provided. The first is the number of bits/mm2 that can be achieved using properties of the human visual system, but ignoring the redundancy of the image (entropy coding). The second number is the bits/mm2 including the effects of entropy coding. The first number depends mainly on the properties of the visual system, the second number includes, in addition, the properties of the image. The Discrete Cosine Transform (DCT) compression method is used to determine the first number. It is shown that the DCT requires between 16 and 24 bits/mm2 for perceptually lossless encoding of images, depending on the size of the blocks into which the image is subdivided. In addition, the efficiency of DCT compression is found to be limited by its susceptibility to interference from adjacent maskers. The present analysis suggests that the visual system requires many more bits/mm2 than the results of other researchers who find that .5 bits/mm2 are sufficient to represent an image without perceptible loss.© (1990) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only." @default.
- W1981029252 created "2016-06-24" @default.
- W1981029252 creator A5057163571 @default.
- W1981029252 date "1990-10-01" @default.
- W1981029252 modified "2023-09-23" @default.
- W1981029252 title "<title>High resolution and image compression using the discrete cosine transform</title>" @default.
- W1981029252 cites W1483050978 @default.
- W1981029252 cites W1485575306 @default.
- W1981029252 doi "https://doi.org/10.1117/12.19671" @default.
- W1981029252 hasPublicationYear "1990" @default.
- W1981029252 type Work @default.
- W1981029252 sameAs 1981029252 @default.
- W1981029252 citedByCount "3" @default.
- W1981029252 countsByYear W19810292522020 @default.
- W1981029252 crossrefType "proceedings-article" @default.
- W1981029252 hasAuthorship W1981029252A5057163571 @default.
- W1981029252 hasConcept C111919701 @default.
- W1981029252 hasConcept C11413529 @default.
- W1981029252 hasConcept C115961682 @default.
- W1981029252 hasConcept C13481523 @default.
- W1981029252 hasConcept C152124472 @default.
- W1981029252 hasConcept C154945302 @default.
- W1981029252 hasConcept C160086991 @default.
- W1981029252 hasConcept C1769480 @default.
- W1981029252 hasConcept C2221639 @default.
- W1981029252 hasConcept C31972630 @default.
- W1981029252 hasConcept C33923547 @default.
- W1981029252 hasConcept C41008148 @default.
- W1981029252 hasConcept C78548338 @default.
- W1981029252 hasConcept C81081738 @default.
- W1981029252 hasConcept C9417928 @default.
- W1981029252 hasConceptScore W1981029252C111919701 @default.
- W1981029252 hasConceptScore W1981029252C11413529 @default.
- W1981029252 hasConceptScore W1981029252C115961682 @default.
- W1981029252 hasConceptScore W1981029252C13481523 @default.
- W1981029252 hasConceptScore W1981029252C152124472 @default.
- W1981029252 hasConceptScore W1981029252C154945302 @default.
- W1981029252 hasConceptScore W1981029252C160086991 @default.
- W1981029252 hasConceptScore W1981029252C1769480 @default.
- W1981029252 hasConceptScore W1981029252C2221639 @default.
- W1981029252 hasConceptScore W1981029252C31972630 @default.
- W1981029252 hasConceptScore W1981029252C33923547 @default.
- W1981029252 hasConceptScore W1981029252C41008148 @default.
- W1981029252 hasConceptScore W1981029252C78548338 @default.
- W1981029252 hasConceptScore W1981029252C81081738 @default.
- W1981029252 hasConceptScore W1981029252C9417928 @default.
- W1981029252 hasLocation W19810292521 @default.
- W1981029252 hasOpenAccess W1981029252 @default.
- W1981029252 hasPrimaryLocation W19810292521 @default.
- W1981029252 hasRelatedWork W2186526324 @default.
- W1981029252 hasRelatedWork W2186976868 @default.
- W1981029252 hasRelatedWork W2187894125 @default.
- W1981029252 hasRelatedWork W2294304967 @default.
- W1981029252 hasRelatedWork W2330977445 @default.
- W1981029252 hasRelatedWork W2333655676 @default.
- W1981029252 hasRelatedWork W2528488324 @default.
- W1981029252 hasRelatedWork W2737967217 @default.
- W1981029252 hasRelatedWork W2907557920 @default.
- W1981029252 hasRelatedWork W2963857953 @default.
- W1981029252 hasRelatedWork W3011638583 @default.
- W1981029252 hasRelatedWork W3019026538 @default.
- W1981029252 hasRelatedWork W3111906665 @default.
- W1981029252 hasRelatedWork W3114975295 @default.
- W1981029252 hasRelatedWork W3121733023 @default.
- W1981029252 hasRelatedWork W3201553860 @default.
- W1981029252 hasRelatedWork W3201855603 @default.
- W1981029252 hasRelatedWork W955382492 @default.
- W1981029252 hasRelatedWork W2289328822 @default.
- W1981029252 hasRelatedWork W2556761848 @default.
- W1981029252 isParatext "false" @default.
- W1981029252 isRetracted "false" @default.
- W1981029252 magId "1981029252" @default.
- W1981029252 workType "article" @default.