nvTIFF-Decode-Image-ROI

TIFF Single ROI Image Decoding using nvTIFF Library

Description

This code demonstrates Single Image and ROI decoding using nvTIFF library.

Key Concepts

GPU accelerated TIFF Image decoding

Supported SM Architectures

SM 6.0 +

Supported OSes

Linux, Windows

Supported CPU Architecture

x86_64, arm64-sbsa, aarch64-jetson

APIs involved

nvTIFF

Building (make)

Prerequisites

• A Linux system with recent NVIDIA drivers.
• Install the CUDA toolkit.
• CMake (3.17 or later)
• [nvTIFF] (https://developer.nvidia.com/nvtiff-downloads).
• [nvComp] (https://developer.nvidia.com/nvcomp-download)

Build command on Linux

$ mkdir build
$
$ cd build 
$
$ export CUDACXX=<nvcc location>
$
$ cmake ..  -DNVTIFF_PATH=<nvTIFF Library location>
#
# example  cmake .. -DNVTIFF_PATH=~/project/cudalibrarysamples-mirror/nvTIFF/libnvtiff
#
$ make

Usage

Usage: ./nvtiff_decode_image -h

./nvtiff_decode_image -f <TIFF_FILE> [-image_id image_id]  [-o output_dir] [-roi offset_x, offset_y, roi_width, roi_height]
Parameters: 
    <TIFF_FILE>   :  TIFF file to decode.
    image_id      :  Image index(IFD location) within a TIFF file. Defaults to 0.
    output_dir	:	Write decoded images in PNM format to this directory.
    offset_x, offset_y, roi_width, roi_height : Region of interest coordinates for decoding.