Cosa (chi) è Adam7 - definizione
INTERLACING ALGORITHM FOR RASTER IMAGES
Adam7; Adam 7
Adam7
PROTEIN-CODING GENE IN THE SPECIES HOMO SAPIENS
ADAM7 mRNA
<graphics, algorithm> One of the progressive coding methods
used in PNG images. Adam7, named after its author, Adam
M. Costello, consists of seven distinct passes over the image.
Each pass transmits a subset of the pixels in the image.
The pass in which each pixel is transmitted is defined by
replicating the following 8-by-8 pattern over the entire
image, starting at the top left:
1 6 4 6 2 6 4 6
7 7 7 7 7 7 7 7
5 6 5 6 5 6 5 6
7 7 7 7 7 7 7 7
3 6 4 6 3 6 4 6
7 7 7 7 7 7 7 7
5 6 5 6 5 6 5 6
7 7 7 7 7 7 7 7
(2000-09-12)
ADAM7
PROTEIN-CODING GENE IN THE SPECIES HOMO SAPIENS
ADAM7 mRNA
Disintegrin and metalloproteinase domain-containing protein 7 is a protein that in humans is encoded by the ADAM7 gene. ADAM7 is an 85-kDa enzyme that is a member of the transmembrane ADAM (A Disintegrin and Metalloprotease) protein family.
Wikipedia
Adam7 algorithm
Adam7 is an interlacing algorithm for raster images, best known as the interlacing scheme optionally used in PNG images. An Adam7 interlaced image is broken into seven subimages, which are defined by replicating this 8×8 pattern across the full image.
The subimages are then stored in the image file in numerical order.
Adam7 uses seven passes and operates in both dimensions, compared to only four passes in the vertical dimension used by GIF. This means that an approximation of the entire image can be perceived much more quickly in the early passes, particularly if interpolation algorithms such as bicubic interpolation are used.
