- image-dimensions input-portprocedure
- image-info input-portprocedure
Procedures accepting an input port and returning a list of attributes. image-dimensions returns a list of width and height, image-info returns a list of the image type symbol, width, height and rotation angle in degrees. The rotation is always set to zero for non-JPEG images; JPEG images with EXIF metadata may have a non-zero rotation.
Used image type symbols:
- gif
- png
- tiff
- jpeg