Is is possible to get jpeg2000 from ImageToBlob?

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robertraiz
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Is is possible to get jpeg2000 from ImageToBlob?

Post by robertraiz » 2014-02-10T10:39:51-07:00

Hello all,
I have a script which takes png8/32 files and crops them to a fixed width and height and then uses ImageToBlob.
The problem is that I would need to get and end result with a jp2 file as I get a smaller size of the same file.

Is it possbile to use ImageToBlob(magick=>'jp2')? I tried but with no luck.

robertraiz
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Re: Is is possible to get jpeg2000 from ImageToBlob?

Post by robertraiz » 2014-02-11T03:25:39-07:00

If this is not possible I would also need some insight in how to make my png8 files smaller...maybe? The only attribute that I am sending to ImageToBlob is magick -> png and quality-> 90
I am not sure if I could use some compression or something similar.

I appreciate any advice.

robertraiz
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Re: Is is possible to get jpeg2000 from ImageToBlob?

Post by robertraiz » 2014-03-14T02:26:46-07:00

Hello,
I am still trying to use:

Code: Select all

 ImageToBlob(magick=>'jp2')
but with no luck.

I have a png file and I want to obtain the jpeg 2000 format from the script.
The error is an empty file."

Can someone please tell me how is the correct syntax that should be used?

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magick
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Re: Is is possible to get jpeg2000 from ImageToBlob?

Post by magick » 2014-03-14T04:58:57-07:00

Type
  • convert -list format
Is JP2 listed as supported?
  • JP2* JP2 rw- JPEG-2000 File Format Syntax (2.0.0)
If so, ImageMagick can read and write JPEG2000 images, including with ImageToBlob().

robertraiz
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Re: Is is possible to get jpeg2000 from ImageToBlob?

Post by robertraiz » 2014-03-14T05:55:15-07:00

Hello,

I think you have solved my issue. I do not have the format listed.
I will try to install the support.

The thing is, that equery u shows that the support for jpeg 2000 is active. (through DCM* maybe )

robertraiz
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Re: Is is possible to get jpeg2000 from ImageToBlob?

Post by robertraiz » 2014-03-14T07:08:32-07:00

Unfortunately I did not manage to install the support for it.

if I run indentify on my jp2 image, I get:

Code: Select all

test.jp2 PNG 300x300 3000x3000+600+900 8-bit sRGB 6.69KB 0.000u 0:00.000
I just ran

Code: Select all

convert test.png test.jp2
Is it possible the conversion is not ok?

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