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Software

Video Sequence Point Processor - Screenshots

Grab Screenshot Results Screenshot

Operation

1) Download and unzip the ZIP archive below and unzip the folder to an appropriate place on your hard disk.

2) The program expects to find data in the same directory. It will search for and list folders with an underscore in their name. So, put each set of images in a folder named with the format, for example, SUBJECT_NUMBER; just so long as it includes at least one underscore.

3) To run the program double-click the file Grab.exe. (Grab-debug.exe opens a command window so you can see and report messages from the workings of the program if anything goes wrong).

4) Select a data set using the drop-down menu in the top left (populated with the names of all folders in the program directory with an "_" in them).

5) Press space to go to the first image.

6) Position the cursor over the marker on top of the target and right-click. This places a red cross at that point. The point will only register is the mouse is still when clicked, so don't rush - stop and click. The coordinates appear below the image.

7) Position the cursor over the cross location and left-click. This places a blue cross at that point. The point will only register is the mouse is still when clicked, so don't rush - stop and click. The coordinates appear below the image.

Stages 6 & 7 are interchangeable - either can be done first. If either point is not visible then you don't need to mark it: a non-clicked point will be recorded as 0,0 in the data file.

If you are not happy with either point you can re-click (might be best to click somewhere away from the point to give a clear view, then click on the point you want to mark) or press the Esc key and re-mark both points.

8) When you are happy with both points (even if that means omitting one or both), press the space bar and the coordinates will be written to the output file and the next image in sequence will be displayed until the last image has been processed.

At the end of the sequence in a tab-delimited text file in the same directory as the images themselves. This can be imported into Excel or any other program. To open directly in Excel, just replace the .txt on the end of the file name with .xls .

A test folder of five images is included in the folder AH_D00.

Download

Download a ZIP archive containing the .class files for this application along with an executable wrapper (Grab.exe) and example images..