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Re: Bash script with Image Magick to a Java program

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On Fri, 27 May 2016 11:06:16 +0200, Cecil Westerhof wrote:

> I evaluate things. Maybe I start with the standard library and as my
> program evolves I switch. At the moment I know nothing about graphical
> functionality in Java.
>
Whether the standard image classes in java.awt.image will do the job for 
you depends on the image source. I use it to produce thumbnails of JPG 
images but find that it can't correctly handle some JPGs from some 
sources. These are always B&W images, which result in a thumbnail of the 
correct requested size but distorted by being broken into vertical 
stripes separated by white 'bars' and, typically with the right-hand 1/3 
or so of the original image not appearing in the thumbnail version. 

This seems to be a deficiency in the Java library since the GIMP image 
manipulation program doesn't show this problem. I haven't tried Image 
Magik on these images so don't know what it would do.
 
Starting with the standard class library and only moving on if you find 
things it can't do sounds like a good plot. 

My only other comment is that the documentation for the standard image 
library does rather assume that you are already up to speed on image 
manipulation and so you know what affine transforms, etc. are and why you 
should use each type of operation on an image and in what order. This 
isn't covered in the Java tutorials and there are no references to this 
sort of basic information.


-- 
martin@   | Martin Gregorie
gregorie. | Essex, UK
org       |

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Thread

Bash script with Image Magick to a Java program Cecil Westerhof <Cecil@decebal.nl> - 2016-05-27 00:42 +0200
  Re: Bash script with Image Magick to a Java program Jerry Stuckle <jstucklex@attglobal.net> - 2016-05-26 20:45 -0400
    Re: Bash script with Image Magick to a Java program Cecil Westerhof <Cecil@decebal.nl> - 2016-05-27 11:01 +0200
  Re: Bash script with Image Magick to a Java program Arne Vajhøj <arne@vajhoej.dk> - 2016-05-26 22:06 -0400
    Re: Bash script with Image Magick to a Java program Cecil Westerhof <Cecil@decebal.nl> - 2016-05-27 11:06 +0200
      Re: Bash script with Image Magick to a Java program Martin Gregorie <martin@address-in-sig.invalid> - 2016-05-27 10:00 +0000
        Re: Bash script with Image Magick to a Java program Cecil Westerhof <Cecil@decebal.nl> - 2016-05-27 13:31 +0200
          Re: Bash script with Image Magick to a Java program Eric Douglas <e.d.programmer@gmail.com> - 2016-05-27 05:15 -0700
            Re: Bash script with Image Magick to a Java program Cecil Westerhof <Cecil@decebal.nl> - 2016-05-27 15:18 +0200
          Re: Bash script with Image Magick to a Java program Duncan Idaho <duncan@dunenoemail.com> - 2016-05-27 18:51 +0100
            Re: Bash script with Image Magick to a Java program Martin Gregorie <martin@address-in-sig.invalid> - 2016-05-27 18:02 +0000
              Re: Bash script with Image Magick to a Java program Cecil Westerhof <Cecil@decebal.nl> - 2016-05-27 23:23 +0200
            Re: Bash script with Image Magick to a Java program Cecil Westerhof <Cecil@decebal.nl> - 2016-05-27 23:18 +0200
              Re: Bash script with Image Magick to a Java program Duncan Idaho <duncan@dunenoemail.com> - 2016-05-28 08:03 +0100
      Re: Bash script with Image Magick to a Java program Arne Vajhøj <arne@vajhoej.dk> - 2016-05-27 17:59 -0400
  Re: Bash script with Image Magick to a Java program Brixomatic <brixomatic@yahoo.com> - 2016-05-29 17:28 +0200
  Re: Bash script with Image Magick to a Java program Eric Douglas <e.d.programmer@gmail.com> - 2016-06-14 10:25 -0700

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