I downloaded 3 QR codes, they are png files. When I import them into CorelDraw or try to open them in PhotoPaint they are just a black squares. However, when I look at them with any photo viewing programs they are proper looking QR codes. Anyone have any idea what is going on? I have attached one of them.
I just opened this one that you posted, in PP and it was correct. I viewed the image in Waterfox (64 bit Firefox) and then copied and pasted that image in PP. More than likely, these QR codes are not valid png files, or they may have some header data screwed up, somewhere.
You may want to use something like IrFanView to open it and then re-save it, then bring it into DRAW or PP.
Same here...black blob on straight import of the original... so I messed around a bit and then did the Irfanview load and save and dump onto a CorelDRAW page and that basically worked.Was able to get the bitmap on the page and resize. It may even work saving in PP and then importing. In PP it stayed a black blob for me so I didn't even try a Save. Irfanview showed the png file correctly on first take so went from there.
Didn't get into the CMYK vs monochrome bitmap thing too much. Lot of "noise artifacts" in the bitmap on Grayscale import.
the 'dd'
I'm getting a complete negative image from that PNG, in photopaint and coreldraw (bothX6) :
Because its a pure monochrome image, in CorelDraw you can correct it that by selecting the image, left clicking on black from the colour palette and then right clicking on white. But I'd be worried that the pixels might mysteriously revert back to the correct
There's a comment here on a programming library (ASPeasy) "it comes out with the black and white colors reversed. Like a camera negative." which is followed up with "We have solved the problem, if you need the latest version which doesn't have the bug just drop us an email".
I suppose it would be a bit of a coincidence if the site you downloaded from just happened to use ASPeasy to generate its barcodes?
I tried to import to CD X5 and got black square, same when opened in PP X5. Then tried import to CD v11 successfully, but got error when copied in v11 and tried paste into X5 (message - graphic contain an invalid object). OK when saved in CDv11 and reopen in CD X5. Also tried conversion to pdf via Acrobat and open pdf in X5 – it worked. Anyway when published to pdf from CD v11 and pdf opened in X5 then got different result – monochrome bitmap and curve. Mek
I tried to import to CD X5 and got black square, same when opened in PP X5.
Then tried import to CD v11 successfully, but got error when copied in v11 and tried paste into X5 (message - graphic contain an invalid object). OK when saved in CDv11 and reopen in CD X5.
Also tried conversion to pdf via Acrobat and open pdf in X5 – it worked. Anyway when published to pdf from CD v11 and pdf opened in X5 then got different result – monochrome bitmap and curve.
Mek
Okay, so obviously there is something wrong with the way CD or PP opens this png file. I would like to hear from one of the Corel Employees or Corel Beta Testers on this one? Any comments?