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4. Relief Displacement of a Vertical Photograph
The chapter discusses relief displacement and stereoscopy, emphasizing their significance in aerial photography and photogrammetry. It explains how relief displacement affects the accuracy of measurements on vertical photographs due to varying heights of objects, and the importance of stereoscopic modeling in providing depth perception through stereo-pairs. Lastly, it covers the essentials of aerial triangulation, highlighting its applications in mapping and surveying.
Sections
Relief displacement in vertical photographs alters the perceived position of objects based on their height, leading to inaccuracies in measurements.
Stereoscopy is a technique for creating a 3D perception using stereo-pairs of images.
This section discusses the technique of determining the height of various objects from vertical aerial photographs using stereo-photographs and parallax measurements.
Tilted photographs are taken with the camera at an angle greater than 30 degrees from vertical, resulting in distortions that prohibit their direct use for mapping and measurement.
Aerial triangulation is a method in photogrammetry used to determine 3D coordinates from stereo-photographs, minimizing field work.
Relief displacement occurs on vertical photographs due to height variations of objects, affecting their true plan positions.
Stereoscopy allows the creation of three-dimensional models from two-dimensional photographs, enhancing depth perception.
Aerial triangulation helps determine 3D coordinates from stereo-photographs, reducing the need for extensive fieldwork.
Relief Displacement
The horizontal displacement of objects in a vertical aerial photograph from their true geographic positions due to varying heights.
Stereoscopy
A technique that creates a 3D model from two images by utilizing depth perception and parallax principles.
Aerial Triangulation
A method used to determine the 3D coordinates of points by analyzing a series of stereo-photographs.
Practice Exercises
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
1 more question available
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