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Questions tagged [photogrammetry]

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

Photogrammetry is the practice of determining the geometric properties of objects from photographic images. Photogrammetry is as old as modern photography and can be dated to the mid-nineteenth century. Photogrammetry uses methods from many disciplines, including optics and projective geometry.

http://en.wikipedia.org/wiki/Photogrammetry

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Making 3D model from pictures - writing the stereo matching part

I did not took computer vision in college but I'd like to give it a try. I want to make 3D model from a set of pictures. I know you can do it with 123d catch or agisoft photoscan. doing it is not the point, it's writing the software. At first I want…
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Create an application to measure an object from a photo

I am trying to devise a way of creating an application that can measure an object in a photo - automatically. So far, I have come across the following systems: Augmented reality Trigonometry + phone sensors (gyroscope) Known scale item in photo…
Josh
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openMVG + MeshLab produces strange results

I'm trying to use OpenMVG ( imagine.enpc.fr/~moulonp/openMVG/ ) to produce a point cloud from a series of photos. The clould appears more or less fine... But then I run the surface reconstruction poisson in meshlab, here's that happens Any ideas…
Roger Travis
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Determining 2D location of item from a photograph taken from a fixed camera

I have a photograph showing two items, a and b, in a scene. I know the distance to a (if this helps). The camera is at a fixed location, and its height, focal length and direction angle are known. Assume the ground is completely flat. All that is…
GenericJoe
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What are some of the most effective ways for 3D reconstruction?

As I've been doing some research into 3D reconstruction (modeling of physical 3D objects), I've encountered many solutions. I'm curious what are some effective ways for reconstructing 3D objects. For example: Stereoscopic 3D reconstruction with…
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Creating multiple ellipsoids in rgl to show standard deviation in position values

I have a dataset that contains 13 cameras, each camera location was reconstructed 5 times. I have aggregated the measurements into a mean and standard deviation for each the 6 variables that relate to the position of the camera [X, Y, Z, Omega, Phi,…
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Sift Lowe, VLFeat Sift, Python Photogrammetry Toolbox

I do not have much programming experience, and I am currently working on a project with photogrammetry. I'm testing out the Python Photogrammetry Toolbox, which allows the user to select Sift Lowe or VLFeat Sift for the feature detection process.…
Jimmy
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How to generate COG tiff using agisoft python API 1.8.5

In agisoft software how to generate COG ortho ,DSM images
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How to determine travel distance of an object between frames, using a moving object and camera

If you have a video file with a moving object, as well as a moving camera, is it possible to track the distance that the object moved between 10 or 20 frames? I'm using OpenCV to track the object and have no problem finding the distance it travels…
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What are good resources for learning and implementing photogrammetry?

What are some good resources (videos, textbooks, etc.) to learn photogrammetry (and other related technologies) for modern and accurate techniques for 3d reconstruction? I've seen the following: Intro to Modern Photogrammetry Photogrammetric…
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