CS/ECE 545 Transform Bestiary

This is an index to simple test images and their transforms. The data are in the WPI CCC directory /cs/cs545/notes/transforms/. Note, borders have been drawn around all original images and histogram equalization has been applied to all transform images on this page. These changes, made for visual clariaty, have not been applied to the images in the directory.

Also note that the Fourier transforms are given in two forms: with the origin at the top left of the image and with the origin centered in the image.

Even Image

	Original Image, even.img
	Hartley Transform, h_even1.img. A text file of the pixel values is in h_even.txt.
	Log of Hartley Transform, h_even2.img
	Magnitude of Fourier Transform, f_even1.img. A text file of the pixel values is in f_even.txt. Origin at top left
	Log of Magnitude of Fourier Transform, f_even2.img. Origin at top left
	Phase of Fourier Transform, f_even3.img. Origin at top left
	Magnitude of Fourier Transform, f_even1A.img. A text file of the pixel values is in f_evenA.txt. Origin at center
	Log of Magnitude of Fourier Transform, f_even2A.img. Origin at center
	Phase of Fourier Transform, f_even3A.img. Origin at center

Odd Image

	Original Image, odd.img
	Hartley Transform, h_odd1.img. A text file of the pixel values is in h_odd.txt.
	Log of Hartley Transform, h_odd2.img
	Magnitude of Fourier Transform, f_odd1.img. A text file of the pixel values is in f_odd.txt. Origin at top left.
	Log of Magnitude of Fourier Transform, f_odd2.img. Origin at top left.
	Phase of Fourier Transform, f_odd3.img. Origin at top left.
	Magnitude of Fourier Transform, f_odd1A.img. A text file of the pixel values is in f_oddA.txt. Origin at center.
	Log of Magnitude of Fourier Transform, f_odd2A.img. Origin at center.
	Phase of Fourier Transform, f_odd3A.img. Origin at center.

Image of Two Points

	Original Image, points.img
	Hartley Transform, h_points1.img. A text file of the pixel values is in h_even.txt.
	Log of Hartley Transform, h_points2.img
	Magnitude of Fourier Transform, f_points1.img. A text file of the pixel values is in f_points.txt. Origin at top left.
	Log of Magnitude of Fourier Transform, f_points2.img. Origin at top left.
	Phase of Fourier Transform, f_points3.img. Origin at top left.
	Magnitude of Fourier Transform, f_points1A.img. A text file of the pixel values is in f_pointsA.txt. Origin at center.
	Log of Magnitude of Fourier Transform, f_points2A.img. Origin at center.
	Phase of Fourier Transform, f_points3A.img. Origin at center.