tiff

How to write EXIF tags (or any other IFD tags) into a JPEG taking into account offsets?...

I was able to successfully parse out EXIF and GPS tags from regular JPEG following the specs, no problem. But... now I need to write some of them back - modified. I know I can use libraries, but I'd rather write something myself. I just need to know what is an established practice of writing those tags, 'cause there are no direct instruc...

Detecting bits per pixel in a TIFF image

Handling monochrome tiff image using LibTiff, I can read "Bits per sample" parameter: TIFFTAG_BITSPERSAMPLE. When it returns 16, actual "Bits per pixel" value for such image may be any value from 9 to 16, in most cases this is 10, 12, 14 or 16. Is there any tiff image tag that keeps this value? ...

converting tiff to gif in php

Hi ! I need to convert tiff file to gif . can some one give me php or python script to do that ? ...

Read a tiff file's dimension and resolution without loading it first

How to read a tiff file's dimension (width and height) and resolution (horizontal and vertical) without first loading it into memory by using code like the following. It is too slow for big files and I don't need to manipulate them. Image tif = Image.FromFile(@"C:\large_size.tif"); float width = tif.PhysicalDimension.Width; float heigh...