The following are instructions on how to run the applets
which are part of the HIPR package. These applets are designed
to allow the user to try out the operators which are outlined
in the worksheets.
You may want to review the general instructions first,
which gives a demonstration overview, JAVA details, browser details,
known bugs, etc.
You can experiment with different images using any of the images
supplied in HIPR or by a URL. Some of those available in HIPR
have the prefixes given here and .gif as the file extension:
grayscale (cam1, che1, cln1, fru1, man8, str1, str2, str3, tol1,
txt2, wal2, wom1, wom2, urb1, xra1)
and range (bae1, fac1, phn2, ren1, ren2, ufo1, ufo2, ufo3)
images.
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
loaded.
The input image is displayed in the Input display area
below the control buttons, along with the image size.
Operator Instructions
The input image is initially smoothed using the mean smoothing
operator. This smoothed image is then subtracted from the original
image to produce an edge image. This edge image, weighted
by the k parameter, is then added to the original image to produce
the sharpened output image. K must be zero or larger.
The output is displayed to the right of the two input images.
If the image sizes are different, the output image dimensions are the
smaller of the dimensions of the input images.
Pressing the green start button causes the operator to run.
Pressing the
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.
Known Bugs
You can find out about known problems with the system
here.