歷來最滿意的火星照片──LRGB火星

[quote:5ae81edcc6="newcanon"]LRGB的L 是luminous，R是RED，G是GREEN，B是BLUE。
Toucam本身CCD是彩色，成像已具備紅(R)綠(G)藍(B)三元色，LRGB方法即是外加一張照片作合成。最終成像的色彩來自原來的RGB，但它的細節卻來自這個L，而我是以一個改裝了黑白CCD的toucam拍下另一段短片，經處理後的照片便用作L，把這個L和原來彩色CCD toucam的影像以photoshop疊合起來，便成為一張LRGB的照片。
除了LRGB，還有所謂IRRGB，以紅外線影像和RGB影像合成。
RRGB，用紅色通道和RGB影像合成，以強化火星地形。[/quote]


Thanks for your explanation.

I tried to capture video clips by running my color ToUCam in B/W mode but it doesn't do anything better. Your explanation let me know what you actually did. A B/W CCD usually has better sensitivity, thus revealing better details. So the final result is a composition of images obtained from processing clips from TWO different cameras (or camera with different filter settings).

I found that RegiStax (do you use it?) LRGB processing doesn't really improve the image -- o r maybe I'm too naive in using it:-0

[quote:6793b5d806="nngs"][quote:6793b5d806="nngs"]Great photos!! unbelievable rich-of-features!

Just a small question: what causes that blue color at the low portion of Mars? is it real or an artificial effect?[/quote]

To me, the bluish part is not real. B channel contributed too much? or something else caused the color?[/quote]

那藍色不論用C14目視或拍攝都存在，而且在不少外地同好照片中都存在，是真的。見以下的照片。