液晶顯示器已成為目前顯示器的主流，取代過去傳統映像管顯示器的時代，如何確保面板出產時色彩表現是一致且符合預期的伽瑪曲線，色彩校正是一個重要的環節。以往以來都是利用光電色度儀這類的色彩量測儀器來執行校正的工作，但是價格昂貴且量測時間受限於儀器本身的量測速度，同時間內只能量測單一色階。
本論文提出了一個低成本的量測伽瑪曲線方式，採用CMOS感測器企圖取代昂貴的色彩量測儀器。因考慮CMOS感測器的成本低廉，快速量測的方法採用多顆感測器同時量測達到同時量測多階的目的。實驗結果顯示出與色彩量測儀器的平均誤差在2.08％左右，最大誤差也僅在3.20％左右，而雙顆CMOS量測的方式可有效的將量測時間大幅所短為原本的一半。

LCD monitor has become the most popular product of display market, and replace typical CRT monitor, in order to make sure the identical color perform of each LCD panel and match with expectation Gamma curve, color correction is the important part in technological process of LCD production. In the past, the measurement usually use the Photoelectric Colorimeter to implement the correction work, but problems are expensive prices and the instrument limit measure speed, measure only single level at the same time.
This paper proposes a low-cost method for measuring Gamma curve by utilizing low-cost CMOS sensors to replace expensive color measuring instrument. Due to the low cost of CMOS sensor, we use multiple sensors to achieve fast measurement by measuring multi-level patterns at the same time. The experimental result shows that there is only 3.20% maximum error and 2.08% average error between proposed method and measuring instrument K10, and half of measuring time can be effectively saved by using two CMOS sensors.

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