The predefined hand configuration images in src/main/resources/base/predefined show significant varitions. Notably, some images contain excessive empty space around the content, which makes them unrecognizable when rendered in smaller sizes within the hand configuration window (cf. #338). Also the images differ in size and formatting.
Trim empty space: remove excessive empty space around the content in all predefined hand configuration images.
Uniform background: Some images (e.g., clawed-5.png and pdhs_bent-R.png) have a white background while the majority has transparent background. standardize the background across all images to either all while or all transparent.
Uniform resolution: resolutions vary a lot. compare 1.png (367 x 377) vs. 8.png (2048 x 2048). I don't think we need a high resolution.
The predefined hand configuration images in src/main/resources/base/predefined show significant varitions. Notably, some images contain excessive empty space around the content, which makes them unrecognizable when rendered in smaller sizes within the hand configuration window (cf. #338). Also the images differ in size and formatting.
To make predefined images more useful/visible: