03 May '13, 11am

Using Generic Image Processing Operations to Detect a Calibration Grid

Using Generic Image Processing Operations to Detect a Calibration Grid

We published a technical report about using generic image processing operations to detect a calibration grid . Camera calibration is an important problem in 3D computer vision. However popular algorithms for determining the required correspondences are either semi-automatic (i.e. they require user interaction) or they involve difficult to implement custom algorithms. Using the HornetsEye Ruby-extension , a robust algorithm for detecting the corners of a calibration grid and assigning the correct correspondences for calibration was implemented (source code here: calibration.rb ). The solution is based on generic image processing operations so that it can be implemented quickly. We also present a corner detector based on steerable filters. The corner detector is particularly suited for the problem of detecting the corners of a calibration grid.

Full article: http://www.rubyflow.com/items/9243-using-generic-image-pr...

Tweets

Dear Q nerds, there is a calibration happening ...

coffeeinstitute.org 03 May '13, 3pm

Overview The New Database Submit a Coffee In-Country Partners Current Q Graders Current R Graders Current Q Instructors Be...

Google Now Treating 20 ccTLDs As Generic TLDs

seroundtable.com 02 May '13, 12pm

For example, domain.co.uk is specific to UK web sites or domain.co.il is specific to Israel web sites. Some country specif...

Using QR codes in real estate

Using QR codes in real estate

singaporerealestate.info 02 May '13, 1pm

A QR code (abbreviated from Quick Response code) is a type of matrix barcode (or two-dimensional code) first designed for ...

Retina Display badly needs video processing: via @eetimes

Retina Display badly needs video processing: vi...

eetimes.com 02 May '13, 6pm

MADISON, Wis.– Most users of iPad’s Retina Display (or a similar tablet featuring a display with Retina-like higher resolu...