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| Keywords: DVD-Video enhancement using anamorphic lens.png <br> English <br> Increasing the resolution of 2 35 1 widescreen video on a en DVD disk by eliminating wasted en pixels due to en letterboxing This is normally possible only with a front projector 1 While anamorphically-enhanced DVD-Video contains no wasted resolution for 16 9 1 78 1 videos the use of black bars or mattes is necessary for wider formats such as 2 35 1 movies which are too wide to fit into the 16 9 frame The display device would display these black bars as if they were a part of the video wasting some of the device's native resolution <br> 2 To overcome the wasted resolution the video is scaled stretched vertically eliminating the black bars This vertical stretch via pixel en interpolation is performed by a video processor which is either a built-in component of the projector or an external model such as a en Home theater PC The image however becomes distorted in the process and needs to be corrected <br> 3 To restore the original aspect ratio an anamorphic lens is placed in the light path of the projected image The lens uses either vertical compression VC or horizontal expansion HE Since the lens works optically the increase in vertical resolution is preserved In addition the en luminance is altered vertical compression increases the brightness of the video while horizontal expansion decreases it <br><br> <br> en User Shawnc 19 57 16 January 2006 en User Shawnc uploaded by Andreas -horn- Hornig en User Shawnc put it under the PD-user original posted en Image DVD-Video enhancement using anamorphic lens gif Shawnc Anamorphic widescreen | ||||
