On Fri, Jan 13, 2017 at 7:01 PM, luigi scarso <[email protected]> wrote:
> From > https://msdn.microsoft.com/en-us/library/ms932271.aspx > PropertyTagPixelPerUnitX > Pixels per unit in the x direction. > Tag 0x5111 > Type PropertyTagTypeLong > Count 1 > > PropertyTagPixelPerUnitY > Pixels per unit in the y direction. > Tag 0x5112 > Type PropertyTagTypeLong > Count 1 > > PropertyTagPixelUnit > Unit for PropertyTagPixelPerUnitX and PropertyTagPixelPerUnitY. > A setting of 0 indicates that property is unknown. > Tag 0x5110 > Type PropertyTagTypeByte > Count 1 > > but these tags does not affect the resolution. hm, not true. I can use http://www.libpng.org/pub/png/book/chapter11.html#png.ch11.div.8 as reference. -- luigi
