Cameras and Geometry

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1. What output directly addresses “Which marked parking spaces are free?”A. One whole-image “car present” labelB. A vehicle count without space locationsC. An occupied-or-empty decision associated with each marked spaceD. The camera's file size

2. Why do comparable distant parking spaces occupy fewer pixels in a perspective view?A. Their real dimensions necessarily decrease with distance.B. In an ideal perspective projection, image displacement scales inversely with depth for the same sideways distance.C. All image pixels contain different physical units.D. Farther spaces always have fewer painted lines.

3. What does checking lens distortion help prevent?A. Every lighting change in a parking lotB. A mismatch between an ideal camera geometry and curved positions in a real imageC. The need to define a vision taskD. Every detector false positive

4. With focal length 800 pixels, lateral offset 1 meter, and depth 4 meters, what is the ideal image offset from the principal point?A. 100 pixelsB. 200 pixelsC. 400 pixelsD. 3,200 pixels

5. A detector finds a car driving in a lane that lies outside every marked parking region. What should the occupancy rule do?A. Mark the closest space occupied automatically.B. Mark all spaces occupied.C. Ignore the car for per-space occupancy unless other evidence places a car in a marked space.D. Delete all detections from the camera.

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Cameras and Geometry

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