« Return to Thread: How to do JPEG Compression Save at 10

RE: How to do JPEG Compression Save at 10

by prasadtv :: Rate this Message:

Hi Eric,

As you said I tried by setting quality for info object before write to file.
But when I open that new image in photo shop it allways shows saved as 12.
But I want to save the file as 10. I tried with different values for quality
between 1 to 100.

One more Quick Question, How do I set the DPI while saving an image?

I have an image with 800 dpi, I want to resize to 285x431 with 72 DPI using
JMagick api.

It will be more helpful, if you can provide some code...

Help me on this at an earliest, becz I am stucked on this...need urzent help
on this...

Thanks & regards
Prasad T.V

-----Original Message-----
From: Eric Yeo [mailto:ttey@...]
Sent: Wednesday, September 14, 2005 2:36 PM
To: Prasad TV
Cc: jmagick@...
Subject: Re: [Jmagick] How to do JPEG Compression Save at 10

On Mon, 2005-09-12 at 14:44 +0530, Prasad TV wrote:

> Hi All,
>
> I am using JMagick to resize JPG images. I am able to resize to any
> specified size. The problem is, I want to save the generated image
> using JPEG Compression "10". By default JMagick saves the images in
> JPEG Compression "12". But I want to save the generated image using
> JPEG Compression "10" and JPEG Compression "5" also. Please let me
> know any body has solution for this.
>
> It will be great help for me, if some one helps on this...
>
> I am using the following code to resize:
>
> ImageInfo info = new ImageInfo();
>
> MagickImage blobImage = new MagickImage(info, srcImageData);
>
> blobImage.setFilter(FilterType.HermiteFilter);
>
> MagickImage scaled = blobImage.zoomImage(imgWidth, imgHeight);
>
> processedImageData = scaled.imageToBlob(info);
>
> scaled.setFileName("F:\\imagestoprocess\\GeneratedImages\
> \shd0112l.jpg");
>
> scaled.writeImage(info);

Before calling writeImage, use the setQuality method in ImageInfo, e.g.

info.setQuality(XX);
scaled.writeImage(info);

Please note that the quality value range from 1 to 100 (I think).
Someone please confirm.

Regards,
Eric

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