Alpha Channel

基本解釋

Of course you can do better with the corresponding slider, but with this technique we can change every Map To channel - not just Alpha.
當(dāng)然你可以使用相關(guān)的滑塊作的更好，但使用這個(gè)技術(shù)我們可以修改通道的每個(gè)映射-而不僅僅是Alpha。
We couldn't manage this aspect during post production, because there would have been lot of problems with alpha channel on the leaves of the background trees.
在后期制作中我們不能達(dá)到這一點(diǎn)，因?yàn)樵诒尘皹涞臉淙~上阿爾法通道會(huì)出現(xiàn)很多問題。
He also remarked WebP’s lack of some features such as color representation “other than 4:2:0 YCrCb”, “EXIF data and ICC color profiles”, and alpha channel support, which is also not supported by JPEG.
他還認(rèn)為WebP缺乏某些特性，如除“4:2:0 YCrCb”之外的色彩表示、“EXIF數(shù)據(jù)和ICC色彩描述”、Alpha通道——不過JPEG也不支持這些特性。

Others may need medications like calcium channel blockers, alpha-blockers, or vasodilators, all of which open up the blood vessels in various ways and increase circulation.
FORBES: Winter Weather Skin Conditions: The Trifecta