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低背光狀態下之顯示器影像增強技術
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刊登日期:2014/05/21 |
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‧ 專利名稱 |
低背光狀態下之顯示器影像增強技術 |
‧ 專利證書號 |
I352315 8026935B2
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‧ 專利權人 |
國立臺灣大學 |
‧ 專利國家
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中華民國 (2008/01/21) 美國 (2008/06/30)
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‧ 發明人/PI |
蔡佩珊 ,陳宏銘 ,梁家愷 ,
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‧ 單位 |
電信工程學研究所
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‧ 簡歷/Experience |
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技術摘要 / Our Technology: |
一種低背光照明度影像增強處理方法及系統,其可整合至一背光照明式之影像顯示器,例如主動式液晶螢幕顯示器,用以對該影像顯示器提供一低背光照明度狀態下的影像增強處理功能;其特點在於將各個輸入影像轉換成一亮度影像,並將此亮度影像分解成一低頻帶之基層影像和一高頻帶之細部層影像;再接著對該基層影像進行亮度補償處理,並同時對該細部層影像進行對比強化模組處理;最後再將二者疊加成單一個影像,並接著進行色彩轉換,即可獲得一亮度增強之輸出影像來顯示於影像顯示器上。此特點可使得影像顯示器在降低背光已減低裝置耗電量之同時,仍可令其所顯示之影像具有良好的視覺效果。
A low-backlight image visibility enhancement method and system is proposed for integration to a backlit type of display unit, such as active matrix LCD (Liquid Crystal Display). The proposed method and system firstly converts the image of each video frame into a brightness-based grayscale image; then decomposes the grayscale image into a low-pass base layer and a high-pass detail layer; and then performs a brightness compensation for the base-layer image and a contrast enhancement for the detail-layer image; and finally combines the two image layers into one single image and performs color conversion to the combined image. The resulted image is then used for display on the display unit. This feature allows the display unit to use a low level of backlight to save electrical power consumption while nevertheless allow the image to be displayed with good visibility.
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專利簡述 / Intellectual Properties: |
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聯繫方式 / Contact: |
臺大產學合作總中心 / Center of Industry-Academia Collaboration, NTU |
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Email:ordiac@ntu.edu.tw |
電話/Tel:02-3366-9945 |
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