Drawing on Videos

Drawing on Videos

One of the most important tools of a video analysis system is the ability to overlay drawings on top of the videos. SportsCAD has many advanced drawing tools to provide in-depth video analysis.

 

Note: You can draw a straight Line or a Straight Arrow. On the Menu bar, Click "Draw" then "Draw Straight Line".

1 . FreehandFreehand

Freehand

1.   Load a student.

2.   Click on the Draw button.

3.   Move the mouse where you want to start drawing.

4.   Press and hold the mouse button down.

5.   Move the mouse to draw on the video.

2 . TargetTarget

Target

1.   Load a student.

2.   Click on the Plus Sign Button.

3.   Position the mouse where you want the CENTER of the plus sign to be.

4.   Click the left mouse button.  

3 . SquareSquare

Square

1.   Load a student.

2.   Click on the Square Button.

3.   Position the mouse where you want the TOP of the square to be.

4.   Click and release the left mouse button. "Drag" the square to where you want it by moving the mouse.

5.   Click the mouse button again to lock the square in place.

4 . LineLine

Line

1.   Load a student.

2.   Click on the Line Button.

3.   Position the mouse where you want the Top or Bottom of the line to be.

4.   Click and release the left mouse button. "Drag" the line to where you want it by moving the mouse.

5.   Click the mouse button again to lock the line in place.

 

Note: You can draw a straight line. On the menu bar, go to "Draw" then "Draw Straight Line".

5 . CircleCircle

Circle

1.   Load a student.

2.   Click on the Circle Button.

3.   Position the mouse where you want the center of the circle to be.

4.   Click and release the left mouse button. "Drag" the circle to where you want it by moving the mouse.

5.   Click the mouse button again to lock the circle in place.

6 . AngleAngle

Angle

1.   Load a student.

2.   Click on the Angle Button.

3.   Position the mouse where you want the first line to start.

4.   Click and release the mouse button and move the line to where you want the start of the 2nd line and the end of the 1st line.

5.   Click and release the mouse button again.

6.   Move mouse to where you want the end of the 2nd line.

7.   Click mouse button again.

8.   Look in the display window to see the angle in degrees between the 2 lines.

 

Note: The display window will return to normal with your next operation. To see the angle again, click the Edit Bar and choose the angle to have it show in the display window again.

 

7 . Motion TraceMotion Trace

Motion Trace

1.   Load a student.

2.   Position the video so the student is ready to start his/her back motion

(make sure to zoom out enough that the motion stays onscreen throughout the stroke).

3.   Click on the Path button.

4.   Use the left mouse button and click on the center of the ball (or whatever object you want to capture the path of). This is the starting point of our path. Note: The video will advance one frame every time that you click on the ball.

5.   Click the left mouse button on the center of the ball again.   The line drawn shows the exact path of the ball.

6.   Repeat steps 4 and 5 until you have captured the entire ball path you are interested in seeing.

7. Click the Path button again to turn the button off. Note: You can also right mouse click or simply complete the entire video to turn the button off.

 

Note: You will notice a difference in color in the Path object. If you draw the path of a student on a horizontal plane (side view), this difference in color will represent the "High Speed Point" of the motion. Note: Any other camera angle other than horizontal will produce incorrect results for the "High Speed Point".

 

 

8 . ParallelogramParallelogram

Parallelogram

1.   Load a student.

2.   Click on the Parallelogram Button.

3.   Position the mouse where you want the 1st corner to be.

4.   Click and release the left mouse button. "Drag" the cursor to where you want the second point to be.

5.   Finish positioning the parallelogram by moving the mouse.

6.   Click the mouse button again to lock the parallelogram in place.

9 . ShadeShade

Shade

1.   Load a student.

2.   Click on the Shade Zone Button.

3.   Click the mouse on the bottom of an area.

4.   Move the 1st line through another area and click.

5.   Move the mouse until the 2nd line goes through the third and last area.

6.   Click the mouse button again to lock in place.

10 . Clock GridClock Grid

Clock Grid

1.   Load a student.

2.   Click on the Clock Grid Button.

3.   Position the mouse where you want the center of the clock grid to be positioned.

4.   Click and release the left mouse button and move the mouse to where you want the end of the clock grid.

5.   Click the mouse button again to lock the clock grid in place.

11 . ArrowArrow

Arrow

1. Load a student.

2. Click on the Arrow button.

3. Click and release the left mouse button to lock the back of the arrow.

4. Move the mouse to place the arrow, then mouse click again to lock the arrow in place.

 

Note: You can draw a straight arrow. On the menu bar, go to "Draw" then "Draw Straight Arrow".

12 . GridGrid

Grid

This will the display the grid on the highlighted video.