I would like to have a script to process a set of image files in png format, lets's say inside of one directory. We can also assume the images have the same size. The processing should contain of the following actions: select certain region, make it transparent, repeat for the next file.
Just an example to illustrate what I mean:
should be turned into
edit: @Paolo Gibbelini and @Scribblemacher, you made good suggestions. However I need now to slightly change my requirements. The width of the input image may be different and with of the crop area should be equal to the image width. The height of the crop area should be constantly 69 pixels. Can I achieve that with ImageMagick as well? Would it be correct to pass geometry like
9999x9999+0+69 for the