Image problems in PDF

[svenn]

We are currently using a jpg image as part of our report header. We are having problems creating an image that looks decent at 100 % maginfication in pdf/Word.

We are currently on Jasper 1.3.3

Any tips or tricks for creating a good image in Jasper.

The image looks fine in any image editor we try. Not sure what else we can do.

 

 

[Teodor Danciu]

Hi,

 

I think that the image quality degradation that you perceive is caused by the fact that in JR, everything is rendered at a fixed resolution of 72 dots per inch. Your image might have a better quality (better resolution) and it simply gets lost.

It probably depends on the value of the "scaleImage" attribute (whether the image is reprocessed/cut by JR, or left intact).

 

We are considering introducing a new attribute for images and graphics, to control the resolution at which they are rendered.

This is so that we preserve the quality of images or produce higher-quality graphs for devices that are resolution sensitive.

 

We have some trackers to keep track of similar issues, but so far we have not finalized on the approach:

http://jasperforge.org/projects/jasperreports/tracker/view.php?id=2723

http://jasperforge.org/projects/jasperreports/tracker/view.php?id=3411

 

Feel free to provide us your feedback.

 

Thanks,
Teodor

 

[svenn]

The image that we are using is 72 dots per inch.

Could it have something to do with the image type? Our old logo was a gif at 96 dots per inch and it seems to scale a lot better than the jpg images.

[Teodor Danciu]

Hi,

 

Please provide a sample JRXML and the image, so that we can test on our own.

You did not mention what the scaleImage attribute is.

 

Thank you,

Teodor