Picsel Image File Format Support
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JPEG
JPEG is a format defined by the ISO Joint Photographic Experts Group. It
is well suited to efficient compression of photographs, which it does by
deleting unimportant content according to the kind of detail that people
notice; in particular, it removes more chrominance (colour) information
than luminance (brightness), since the human eye is more sensitive to
luminance.
Although JPEG is less well suited to cartoon or diagram images, ePAGE
will of course render the image data optimally. ePAGE’s support for
JPEG includes exactly the same features of JPEG as those allowed by
almost all other software.
JPEG also supports progressive rendering for more satisfying network
downloading.
Feature Support
Notes
JFIF file format
Yes
24 bit full colour images
Yes
8 bit grey scale images
Yes
Discrete Cosine Transform encoding
Yes
Huffman encoding
Yes
Progressive decompression
Yes
Progressive rendering
Yes
Pixel density (dots per inch/cm)
Yes
Future Support
Picsel continuously strives to enhance the feature set of its software. In
addition to the above features supported in Version 1.0, the following
features are planned to be incorporated in future versions of the Picsel
software. (The ordering in the list does not imply any measure of
priority among the items.)
JPEG2000 file format
Thumbnail image (uncompressed, indexed colour, JPEG compressed)
