Further information about this Demo
- The input images should be GREY SCALE images, i.e. NOT colour images.
- The images sizes of the left and the right images should be the same.
The actual numbers of rows and columes can be any number, i.e. they
do not have to be the power of two. The images do not have to be
squared. For the demo version, the size of the input images cannot be
larger than 320x256 in order to reduce the computation load on our server.
Also maximum search ranges in X- and Y-directions have limits. The
product of these two search ranges needs to be less than 16.
If the output images are NOT what you give. That means your
image is too big, or the search range is too big.
- Most of the common image formats are readable.
- The motion search range needs to be specified.
For example, if the maximum image motion in the image is
5 pixels in the X direction and 3 pixels in the Y direction,
then the motion
search range to be used for the demo should be 5 pixels for
"Motion search range in X" and 3 pixels for "Motion search range
in Y".
- When you use your own images, make sure they are readable/displayable through
the Internet. One easy test to see whether your images can be
read by the demo is to display the images yourself using a web browser.
For example, try to access your image by giving the URL location
"http://extra.cmis.csiro.au/IA/changs/motion/taxi.0.gif". If the images
can be displayed inside the browser, your image should appear
within the browser. Otherwise "xv"(on UNIX) may be called to display
the image. If your image is not readable or directory path is not
correct, an error message, such as "File Not found" may appear.
- The time that the demo spent on processing your images depends on a number of
factors. These include the image size, motion search range, the
network traffic, the current work load of our server etc.
The machine type of our local server is a 360MHz Sun Ultra 10 running
Solaris 2.7.
- The default images used ("taxi") for the demo is from
the Optical flow test image sequences by John Barron et al.
- Other images that you can try are: car_in_move, i0072, img060, norman.
- We thank Norrie Bennie and Kevin Cheong for their help in setting up
this web demo.
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