Types of testing is broadly classified as Black box testing and white box testing
they are lossless...
Algorithm is easy to implement Produce a lossless compression of images
Lossy
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plane waves in lossy dielectrics
lossless
Lossless. Compression techniques do not remove detail from the image.
Lossy= You lose somedata Lossless= You dont
GIF is a lossless compression introduced by CompuServe in 1987 using Lempel-Ziv-Welch (LZW) lossless data compression.
Pict files can use 2 different forms of compression. 1- RLE Compression (the default) is lossless. 2- JPEG compression (only on some systems/graphics programmes) is lossy.
Kodam