Legacy ImageMagick Discussions Archive

Sorry.

convert" "D:\work\Screenshot_20190906-180124.png" -resize x800 -debug accelerate -quality 97 "D:\work\Screenshot_20190906-180124.png"

yields:

2019-09-10T05:38:26+00:00 0:00.029 0.031u 7.0.8 Accelerate convert[6044]: opencl.c/GetOpenCLCacheDirectory/375/Accelerate
Using cache directory ...

with new version 64 IM crashes (on 64bit Win7) with popup message:

ImageMagick Studio library and utility program has stopped working
A problem caused the program to stop working correctly, Please close the program.

I downloaded and used "ImageMagick-7.0.8-64-portable-Q16-x64.zip"

When I add the ...

On my 64bit Win7 system I found no TdrDelay registry entry.

Furthermore I wonder why this warning appears only recently.
In the past IM worked WITHOUT TdrDelay change.

What was changed in IM?

yes, it looks like as if I am getting the desired result....but approx 20 times slower.
For resizing a photo tooks now ~10seconds (in comparison to 0.5 seconds before).

So what causes the fallback from GPU to CPU?

I did not change something extraordinary in my 64bit Win7 system in comparison to ...

When I want to convert (resize) a *.png image under 64bit Win7 then sometimes (mostly but not always) the following error appears:

convert: clBuildProgram failed. (-11) @ warning/opencl.c/CompileOpenCLKernel/1395.

Hmm, ImageMagick worked fine with the same command on the same computer in the past ...

Many cameras create a photo file with originally portrait orientation by
capturing it pyhsically in landscape mode and create header tag that it is rotated by 90 (or 270 deg).

When such a *.jpg file is opened in a (most) picture viewer, then the picture viewer reads at first the orientation header ...

Assume I have a *.jpg picture and want to

1.) sharpen it by lets say 10% (whatever it means)

2.) Increase saturation by 12%

How can I achieve the two tasks with ImageMagick?

Ben

Ok, so "-precision 16" is completely useless since I get the number of Bytes already with "set BYTES=%%~zF"

Ok, meanwhile I have fixed the bug.
The script runs for filtering images for width and height.

Now there is still a problem with the size.

Originally in one of the first posts the "set BYTES=%%~zF" trick was suggested.
Then fmw42 suggested -precision 16 solution.

From my point of view that means ...

Thank you for all the suggestions.

However when I try to setup a full script I am experiencing errors like "Missing operator".

Furthermore I wonder how I can use the "-precision 16" parameter to filter and count the files matching the threshold.

Have a look at the following batch script:

http ...

@snibgo:

Ok, thank you.
You said:

>The operating-system "%~zF" can do that

What does that mean? Can I switch somehow from inside the batch script the format how the WinOS returns the number of bytes?

Assume I have I big dirextory tree with lots of images inside.
The top node starts at the dir D:\archive\images\personal\

Now I want to count (resp. to log into logfile) all *.jpg images (only) which have a file size of e.g. 300KB and more.

Secondly I want to do a similar search but this time I ...

Assume I have a couple of *.jpg pictures with a big EXIF header each.

This EXIF headers contains (beside other meta information) some timestamp fields:

date/time
date/time original
date/time digitalized
.....?

How excatly can I (with ImageMagick)
a) strip off all (only) timestamp header fields?
b ...

ok. Thx

Thank you for clarification.

However after ImageMagick decompressed (internally) the *.jpg and applied the -chop command a re-compression takes place:

At which compression level (by default)?

Assume I want a compression level of 97%: How can I specify this in the convert command above?