header photo

Blog posts : "haarcascade"

Solution for NullReferenceException

February 28, 2013

So, i checked the comments many readers posted and 've been getting this complaint  A LOT from MANY users, where most say something like this:

"I am having a NullRefrenceException error during runtime and the block of code it point to is below:

var faces =
grayframe.DetectHaarCascade(haar, 1.4, 4,
HAAR_DETECTION_TYPE.DO_CANNY_PRUNING,
new Size(25, 25))[0]; "

Part of the solution to a problem is understanding what the problem is.
                                                                                                                       - by Mahvish, The Great :P…

Read more

Level 3d - Add Parameter Tuning Features To Face Detection

January 19, 2012

TO DO:
NOT ALL FACES DETECTED? OR FACE DETECTION IS NOT UP TO YOUR REQUIREMENTS?
THEN ADD THE FEATURES(CODE) AS EXPLAINED IN THIS TUTORIAL, TO IMPROVE face detection according to your requirements by "Varying"/"Tuning" the parameter values of DetectHaarCascade(), by user input and see the differenc…

Read more

Level 3b - Live Multiple Face Detection

December 30, 2011

 PROBLEM STATEMENT:
 
Make a Windows Form Application in C# using EmguCV library, such that
1- it gets an input image from a live web camera OR from some folder by loading/reading it.
2- detects faces (one or many) in the input image.
3- and shows these detected faces in the image by marked rectangl…

Read more

3 blog posts