Is there any C++ function that allows me to convert a tiff format to a raw image?

Question

The raw image should be read the tiff tags number.. Thank you.

Answer 1

Check out LibTIFF - from the manual:

libtiff is a set of C functions (a library) that support the manipulation of TIFF image files. The library requires an ANSI C compilation environment for building and presumes an ANSI C environment for use.

libtiff provides interfaces to image data at several layers of abstraction (and cost). At the highest level image data can be read into an 8-bit/sample, ABGR pixel raster format without regard for the underlying data organization, colorspace, or compression scheme. Below this high-level interface the library provides scanline-, strip-, and tile-oriented interfaces that return data decompressed but otherwise untransformed. These interfaces require that the application first identify the organization of stored data and select either a strip-based or tile-based API for manipulating data. At the lowest level the library provides access to the raw uncompressed strips or tiles, returning the data exactly as it appears in the file.

Answer 2

Have you checked out OpenCV

Answer 3

Magick++ is the object-oriented C++ API to the ImageMagick image-processing library.