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+gtk
+===
+
+Provides a graphical user interface.
+For now, it displays images.
+You can zoom, get the value of the pixel under the mouse, diplaying a histogram.
+You can use fake colors for black and white images (usefull to improve the details of the variation of intensity).
+
+Install
+=======
+
+- Mac OSX: installing gtk
+- Ubuntu: sudo apt-get install libgtk-3-dev
+
+Usage
+=====
+
+o_gtk_image
+-----------
+
+`i_image.sh | o_gtk_image` Open a windows and display the image from the camera.
+
+Note: some format of images are not yet managed.
+You can display in fullscreen `-F`( return in the terminal to quit).
+You can rescaling the intesisty of the pixel with `--min` and `--max` .