PURPOSE

To conduct stereoscopic vision using mirror stereoscopic to produce 3D images.

EQUIPMENTS USED

i. Mirror stereoscope

ii. Pairs of photo

iii. Ruler and pencil

WORK PROCEDURE

a)Producing 3-dimensioanal images.

1. Choose two overlapping photo, marked as photo 1 and photo 2. This area is called the overlap.

2. A point was select on the visible details of photo 1 and named as point A.3. The position of point A was similar in photo 2 and named A’.4. Both aerial photo placed below the stereoscope with overlapping areas in the middle area

stereoscope.5. Look through the binoculars stereoscope and by using only the left eye, to see point A look

at the eyes.6. Right eye used in turn and check point A’ will be in the eye.7. Both eyes used and see points A and A’ simultaneously. If the photo is not to be in

stereoscopic conditions, the two points will appear separately.8. Move the right photo gently until point A’ look became closer and overlap with point A to

form a point only.9. When this situation occurs, the image appeared to arise details(image 3-dimensional) and

comfortable to the eye.10. Check the position of the images around the area of overlap with repeat steps 7-9.

b) A step-by-step procedure to measure base photo.1. In stereoscopic viewing, it is important to orient the photos so that the left and right eyes

see the left and right photos, respectively.2. Mark the flight line, the photo centres (principal points) are first located by joining opposite

fiducial marks with straight lines. Principal points are marked as O1 and O2.3. Corresponding principal points (conjugate principal points), which are the location of

principal points on adjacent overlapping photos are marked next. And then marked the corresponding principal points by estimating their position with respect to these surrounding images. The corresponding principal points are shown as O’1 and O’2.