The horizontal gradient anomalies and two derivatives methods are adopted to extract faint information as well as other methods, and digital image display technique is used to show the results.

方法采用水平梯度法和二次垂直导数等方法提取微弱信息，利用数字图象显示技术成图。

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Computer experts at the University of California in San Diego set out to show how easily keys could be copied from a digital image to highlight the potential security risk of leaving keys on display.

为了强调钥匙曝光的对安全造成的潜在危险，圣地亚哥加利福尼亚大学的计算机专家打算证明通过数码照片配制钥匙轻而易举。

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The display technology of LED includes micro controller, video, optics mechanics and digital image manipulation etc.

LED显示技术涵盖了微机控制、视频、光学、机械和数字图像处理等多种技术。

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When fitted with a pico-projector, the Skinput system could display an image of a digital keyboard on a person's forearm.

CNN: Microsoft's Skinput turns hands, arms into buttons

The Super AMOLED offers much brighter, clearer, and less reflective AMOLED OnCell display, featuring a high resolution WVGA (800x480 pixels) screen with mDNIe (mobile Digital Natural Image engine) technology.

ENGADGET: Samsung Wave: 3.3-inch Super AMOLED, Bluetooth 3.0, and new Bada OS (updated)