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Tilman Hausherr commented on PDFBOX-1975: ----------------------------------------- I changed the POM files to a different repository that I found here: http://stackoverflow.com/a/8923663/535646 https://github.com/stain/jai-imageio-core Reason: [~msahyoun] sent me three JPX test files, and these couldn't be rendered by the current jai_imageio and the rendering was blank. The new one does render the files. (For production, you should use the three JPedal files I mentioned in PDFBOX-1752 instead, these are not available through maven). This was done in rev. 1577658. The three JPX files were added in rev. 1577661. > Improve TestImageIOUtils unit tests to check image resolution and compression > ----------------------------------------------------------------------------- > > Key: PDFBOX-1975 > URL: https://issues.apache.org/jira/browse/PDFBOX-1975 > Project: PDFBox > Issue Type: Task > Components: Utilities > Affects Versions: 2.0.0 > Reporter: Tilman Hausherr > Assignee: Tilman Hausherr > Priority: Minor > Labels: imageio, test, tiff > Fix For: 2.0.0 > > > Because of the problems with recent changes (see PDFBOX-1963), I will improve > the unit tests so that image resolution and compression is checked. > I found out that JPEGs don't have a resolution, BMP had the wrong resolution. > The fault wasn't in the java TIFF writer as I thought before, it is in the > java PNG writer, which uses the PixelSize values wrongly, i.e. it interprets > them as "pixels per mm" instead of "mm per pixel" as per specification. The > JPEG writer throws an exception "JFIF APP0 must be first marker after SOI". > The BMP writer can set the resolution, but the BMP reader doesn't read it. > (Some of this might be different depending on the version) -- This message was sent by Atlassian JIRA (v6.2#6252)