Top "Photogrammetry" questions

Photogrammetry is the practice of determining the geometric properties of objects from photographic images.

How would you find the height of objects given an image?

This isn't exactly a programming question exactly. I just want to know what your approach would be to a common …

image-processing computer-vision photogrammetry
How do I reverse-project 2D points into 3D?

I have 4 2D points in screen-space, and I need to reverse-project them back into 3D space. I know that each …

3d geometry 2d photogrammetry reverseprojection
How can I determine distance from an object in a video?

I have a video file recorded from the front of a moving vehicle. I am going to use OpenCV for …

c++ opencv computer-vision photogrammetry
OpenCV Orb not finding matches once rotation/scale invariances are introduced

I am working on a project using the Orb feature detector in OpenCV 2.3.1 . I am finding matches between 8 different images, 6 …

c++ opencv computer-vision photogrammetry orb
Libraries to get depth map from stereo images?

I'm going to set up some devices to perform real-time 3D motion tracking. My first idea to do so is …

computer-vision stereo-3d 3d-reconstruction photogrammetry
Measuring an object from a picture using a known object size

So what I need to do is measuring a foot length from an image taken by an ordinary user. That …

opencv computer-vision photogrammetry
How to know or calculate depth of field of a photo from EXIF tags?

I want to know the depth of field of a photo, preferably in cm or m. I know that we …

formula photo exif photography photogrammetry
Measure size of object using reference object in photo

I'd like to calculate size of object in a photo which includes both a target object and a reference one. …

image-processing open-source photogrammetry
OpenCV + photogrammetry

i have a stereopair, photo 1: http://savepic.org/1671682.jpg photo 2: http://savepic.org/1667586.jpg there is coordinate system in each …

opencv camera-calibration calibration photogrammetry