Miro Matas Posted June 25, 2021 Share Posted June 25, 2021 Hi Friends, I am not able to detect where is the problem… is not possible to open this tiff at Paint.NET… and Irfan is able to open it : - ( due to the size (140 MB) - shared here https://1drv.ms/u/s!AsCngzNAYz_YgcRtuRzHjoJuZlUMIQ?e=sS8yPK (HLOHOVEC_7-7.tif) TIA Miro Quote Link to comment Share on other sites More sharing options...
null54 Posted June 25, 2021 Share Posted June 25, 2021 45 minutes ago, Miro Matas said: I am not able to detect where is the problem… That TIFF file uses 128x128 pixel tiles that are compressed with JPEG compression. I was able to open it in Paint.NET after re-saving it in IrfanView with LZW compression. 1 Quote Plugin Pack | PSFilterPdn | Content Aware Fill | G'MIC | Paint Shop Pro Filetype | RAW Filetype | WebP Filetype The small increase in performance you get coding in C++ over C# is hardly enough to offset the headache of coding in the C++ language. ~BoltBait Link to comment Share on other sites More sharing options...
Miro Matas Posted June 25, 2021 Author Share Posted June 25, 2021 am I right that at this case (lzw compression) - I will loss 4th band? original have 4bands, re-saving + apply lzw at irfan - resulting tif have only 3bands - looks to me Quote Link to comment Share on other sites More sharing options...
null54 Posted June 25, 2021 Share Posted June 25, 2021 31 minutes ago, Miro Matas said: am I right that at this case (lzw compression) - I will loss 4th band? That is correct. IrfanView only reads the RGB image data, it ignores the 4th channel in the file. 1 1 Quote Plugin Pack | PSFilterPdn | Content Aware Fill | G'MIC | Paint Shop Pro Filetype | RAW Filetype | WebP Filetype The small increase in performance you get coding in C++ over C# is hardly enough to offset the headache of coding in the C++ language. ~BoltBait Link to comment Share on other sites More sharing options...
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