![]() ![]() Large images, ArcGIS reads on demand only the required imagery from To enable scalability for large numbers of Many traditional image workstation applications first read the complete image into memory and thenĪllow a user to make changes to the image before saving it. When a new imagery or raster product is created or persisted from another data source (such as a digital terrain model generated from stereo imagery) then the projection, pixel alignment, pixel depth, format and compression should be carefully chosen to ensure appropriate dynamic range, precision, and fast access. Including lossy or losslessĬompression in the format conversion is optional. The imagery, but it does result in data duplication. In some cases, it is advisable to change the format of the ![]() Necessary) to ensure that the pixel values do not change. High-quality interpretation, it is preferable (and sometimes Quality, possible artifacts, creation of NoData areas, and issues When imagery is processed so that the pixels are sampled (forĮxample, to change the projection), this leads to degradation in ![]() Generally, it is best to leave imagery in its original form. ![]()
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