下載時選擇點陣圖影像同JPEG影像質素方面有無分別?
JPEG(*.jpg)點陣圖(*.bmp)
響網上下載圖片時會有JPEG(*.jpg)同點陣圖(*.bmp)兩者選擇
點陣圖影像檔案大小 除了比 JPEG影像檔案大小 大好多之外
質素方面有無分別?
希望各位高手可以幫幫我
唔該
[[i] Last edited by JerryLee on 2006-10-4 at 01:35 PM [/i]] bmp - Windows bitmap, 點對點冇壓縮. 睇到乜就save乜, 100%冇失真, 但容量非常大.
jpeg[蕳稱 jpg] - Joint Photographic Experts Group, 有壓縮, 容量小, 壓縮率可調整令容量更細, 失真率小於1%起.
詳見: [url]http://www.jpeg.org/committee.html[/url]
[[i] Last edited by d228216 on 2006-10-4 at 01:56 PM [/i]] oh, i originally think jpeg is the best between quality and size 其實如果放上網的是jpeg,再下載jpeg會不會進一步壓縮?
還是只要下jpeg就足夠,再下bmp都只會是jpeg質素(冇進一步壓縮)? 同埋我想問,如果我bmp壓jpg時,我選"Image Quality"是100%的話,圖片仍會失真嗎?用png又會有失真嗎? [quote]Originally posted by [i]d228216[/i] at 2006-10-4 01:53 PM:
bmp - Windows bitmap, 點對點冇壓縮.... [/quote]
Thank for your information
I also want to know any different for print out between BMP & JPG ?
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