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Calibrating camera image measurements – PASCO SPARK Science Learning System Ver. 1.4.0 User's Guide User Manual

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6   Image capture

Measuring in a camera image

4. Touch the box at one end of a measurement arrow.

The measurement arrow is deleted.

Calibrating camera image measurements

To calibrate measurements, the image must include an object of known length.

1. Touch the

Image Tools button to open the tool palette.

2. In the tool palette, touch the

Measurement button.

3. Touch the point on the image at one end of the object of known length.

4. Touch the point on the image at the other end of the object of known length.

5. If necessary, drag the ends of the measurement tool so that it exactly represents the known
length.

6. Touch the

Measurement button again.

The

Measurement button turns orange, and the measurement toolbar appears.

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