Legacy ImageMagick Discussions Archive

Hi. I'm resizing photos over 3000 wide, to 1024 wide. I've racked my brains for a great imagemagick formula. convert DSCF2915-21.tif -colorspace RGB -filter Lagrange -distort Resize 1024 -sampling-factor 1x1 -quiet -density 72 -units PixelsPerInch -colorspace sRGB DSCF2915-21.jpg Question: I like th...

Thanks for your advise fmw42, but I am not asking about saving to jpg. I am asking about downsizing and saving to .tif, then to jpg from that .tif vs. downsizing directly to jpg. Scenario 1 - $ convert image.tif -colorspace RGB -filter Lagrange -distort Resize 1024 -colorspace sRGB result.jpg Scenar...

fmw42, Aren't I introducing 'some' artifacting via downsizing and saving to tiff via some sharpening ? $ convert image1.tif -colorspace RGB -filter Lagrange -distort Resize 1024 -colorspace sRBG EndResult.tif Do you mean If I wish the least amount of artifacing introduced, do not save to tiff, then ...

Hi. I like to downsize large images and save to .tif; (3024x2024) so I can work on them uncompressed later... $ convert image1.tif -colorspace RGB -filter Lagrange -distort Resize 1024 -colorspace sRBG EndResult.tif The images meet my requirements... but when I have to save to .jpg format, I'm not s...

Thanks to all.
[SOLVED]

I guess I could save to PNG, then pipe to IM tiff... hmmmm, maybe that would slap it into conformity.

I forgot, if I want to apply one filter to the shadow area only ( 0-64 ), would the code change like this; Thank you all so much, have a Happy, Healthy New Year.

I opened the output.tif with Xnview, saved as uncompressed tif, then PS will open without problem... wierd. png works as expected without error, must be some .tif saved related IM issue. Should ignore these error messages ? convert.im6: Incompatible type for "RichTIFFIPTC"; tag ignored. `T...

Fantastic ! Just what the doctor ordered... sucess, thanks so much. One small problem, can you think of a reason Photoshop opens the image zoomed in all the way ? It opens in Windows/Linux perfectly with Gimp Linux/Windows, but Photoshop CC 64 & Bridge views the IM images so I can't see the whol...

fmw42, System: Imagemagick 6.7.7.10-7 , Debian Testing I tried your code... convert original.tif \( -clone 0 -filter Cubic -resize 1024 \) \( -clone 0 -filter LanczosSharp -resize 1024 \) \( -clone 2 -threshold 50% -blur 0x1 \) +delete 0 -composite output.tiff Did I do that right ? I got some bizarr...

Like this ? $ convert input.tiff \( -clone 0 filter Cubic -resize 1024 \) \( -clone 0 filter Lagrange -resize 1024 \) \( -clone 2 -threshold 50%% \) +delete 0 -composite output.tiff I think this will use the Cubic for values 0-128, and Lagrange for 129-255, then composite them together ? I forgot, i...

Thanks snibgo.

I can combine 2 images more accurately in Photoshop, I am searching for a single operation in imagemagick.
For example, Photoshop uses 0-255 levels so, if I want
Levels: 0-128 IM filter bicubic
Levels: 128-255 Lagrange

...then combine the 2, is that possible in ImageMagick ?

Hi.

Can I combine (2) different filters for downsizing photos ?

I like bicubic for the shadow areas of a photo
I like Lagrange for the highlight areas of a photo

I want to do this in 1 operation if possible

Thank you.