1. An image acquiring apparatus, comprising: an image acquiring unit or acquiring an image, which comprises at least one pixel corresponding to image data, wherein a location of the at least one pixel of the image is represented by an actual coordinate; and an image processor, which comprises: a stray device for proceeding stray processing to obtain a virtual coordinate according to the actual coordinate; a compensation parameter generator for receiving the virtual coordinate and thus outputting a virtual compensation parameter; and an image processing unit for adjusting the image data according to the virtual compensation parameter.