Avision DF-0902H User Manual

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Contents

4.3 The Compression Tabimag ssion. Bi-tonal imagesare normally compressed using CCITT standard called Group 4(G4). Color and grayscale images are often compressed usingJPEG technology. Move the JPEG Quality slider to the right orleft to increase or decrease the level of compression. Note thegreater the compression level, the lower image quality. Defaultis 50%.appl es not supporte type of compression format, then either a warningy of the compressed filewill not be acceptable.JPEG (Joint Photographic Editor Group). This group developedand lent their name to a file compression standard for color andgrayscale images that is widely used by scanners, and softwareapplications. On Microsoft Windows-based systems, a file withthe extension .jpg has normally been compressed using thisstandard.re available:y Noney G4The Compression tab allows you to compress your scannede and choose the level of compreNote that the compression depends on your image editingication. If your image editing application dothmessage will appear or the image qualitFor scanning color or gray images, the following compressionsay JPEGFor scanning B&W images, the following compressions areavailable:y None4-22