An image acquiring apparatus and an image processing method thereof. First, the apparatus acquires an image including at least one pixel corresponding to image data. A location of the at least one pixel of the image is represented by an actual coordinate. Next, the apparatus proceeds the stray processing according to the actual coordinate and generates a virtual compensation parameter. Then, the apparatus adjusts the image data into adjusted image data according to the virtual compensation parameter. Finally, the apparatus displays the image according to the adjusted image data.