This operator is designed to work with binary images, where
foreground pixels are non-zero and background pixels are zero.
Some of those available in HIPR
have the prefixes given here and .gif as the file extension:
che1, cir1, cir2, cir3, art1, art2, art3, art4, art5, art6, art7,
art8, art9, hse1, mon1thr1, pcb1, pcb2, reg1, rlf1, shu2, son1adp2,
son1adp3, son1thr2, son1thr3, sqr1, stp1, stp2, stp3, tls1, txt2,
You can experiment with different images using any of the images
supplied in HIPR or by a URL.
Enter image specifiers (into the edit box at the top of the
screen) either as a full HIPR image filename
(eg. cam1.gif) or by a full URL. Only gif files can
be loaded. Because of JAVA security, the URL should refer to
a publically accessible place, such as your public_html directory.
Pushing the Load Image button or pushing "Return" on the keyboard
causes the specified image to be
The input image is displayed in the Input display area
below the control buttons, along with the image size.
Each element in the 3x3 kernel has three possible states on (white),
off (black) and match-anything (gray).
Left clicking with the mouse on each kernel element changes its state.
The output is displayed to the right of the input image.
Pressing the green start button causes the operator to run.
Stop button causes the operator to stop running. This is useful
if the system being run on is very slow and the operator is taking a
long time to complete.
The time box shows the amount of time which the
operator took to complete the process on the input image.
Image value inspection
You can inspect the input and result image pixel
values by depressing the left mouse button and moving the
cursor over the desired pixel.
The pixel coordinates and gray-level value are displayed
underneath the image.
Note that some images are larger than the displayed
256x256 display window. Larger images are subsampled
in an appropriate manner.
You can find out about known problems with the system