Legacy ImageMagick Discussions Archive

Thanks for the replies! I started playing with exiftool. The JpgFromRaw option does basically what I want. Somewhat unrelated, I have noticed the NEF displays much more "nicely" in photoshop than the exiftool-outputted preview does. The preview is darker. I guess making a preview which mos...

How does one automatically extract the largest thumbnail/preview JPEG file from a RAW image file? I could have sworn I figured out how to do this with convert, but I can't remember for the life of me how I did it. The best I've found today is exiv2, using the '-e' operator with the 'p' option. This ...

Hey fmw42 & snibgo, I just wanted to say I started messing about with the tips you gave me and it seems to be working quite well. Same-images return a difference of 0. I took one high-quality JPEG (@ 2448x3264 pixels) and compressed it slightly and reduced its size to 979x1305 pixels. My compare...

No problem snibgo, all of this information is a handy start - very much appreciated.

Thanks Fred! I will experiment with those scripts.

Thanks guys. Fred: I had found the link you posted, but unfortunately, it left me with as many questions as when I started. Snibgo: I used the command you suggested, and it gives me the image moments as I have seen them when they're generated with something like identify -verbose -features 1 -moment...

How can I get the perceptual image hash value of an image using the command line? Is this possible? Does it even make sense? If it does - what's the best way to do this? I'm a novice ImageMagick user & total ignoramus when it comes to perceptual hashing. I've been trying to find a way to generat...