手機影像分析系統 ---
將手機(照像手機, 智慧型手機)照像所得到圖片用軟體去分析,
進一步去了解手機硬體的一些規格(Resolution, Grey Scale, Color and Distortion)是否達到要求!!
1.Resolution
衡量這個空間週期的 (output contrast/input contrast) 方法,我們即將它稱為 MTF ( Modulation Transfer Function )或是 SFR ( Spatial Frequency Response )。明與暗的最大強度與最小強度的比值
2.Color
例如:RGB=( 169, 233, 105 ),很少人可以直接意識到它是什麼顏色,但是我如果說這是淡淡的、不是很飽和的、有點亮的綠色,相信大家就馬上明瞭了。
綠色,這在色彩學上也稱為色相,換言之,HSB 色彩模式會比 RGB 模式易懂。
HSB(色調/飽和度/亮度)色相 飽和度 明度
Luminance(Y)亮度,Saturation(S)飽和度,Hue(H)彩度
RGBToXYZ
XYZToCIELab 轉為色域值
3.GreyScale
灰階影像每一個像素都有一個亮度值, 範圍為0(黑色)到255(白色)RGBtoL
Test chart!
測試環境有特別的要求所以需要有一光箱系統, 此光箱須按照規格製作才能把手機最高解析分析出來!
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