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GAWEIN wrote:
或許存成PNG會比較好？沒有經過破壞性壓縮同時也比BMP檔小。
雖然不曉得存PNG檔大概要動用多少演算能力，我想現在的相機應該也夠處理了。
(Note that for transmission of finished truecolor images--especially photographic ones--JPEG is almost always a better choice. Although JPEG's lossy compression can introduce visible artifacts, these can be minimized, and the savings in file size even at high quality levels is much better than is generally possible with a lossless format like PNG. And for black-and-white images, particularly of text or drawings, TIFF's Group 4 fax compression or the JBIG format are often far better than 1-bit grayscale PNG.)
http://www.libpng.org/pub/png/pngintro.html
