how to I use this syntax for People detection [___] = step(peopl​eDetector,​I,roi)

I have ROI (REGION OF INTERESTEd) and which comes from a function that detects movement in a video and I would like to pass it to the spet detection method, how to do it?

Answer 1

[Image Analyst]

Pass it in the argument list to your "spet detection" function

output = MySpetDetectionFunction(ROI);

[EL BETAR DAOUD AHMED]

|Can you More explain please ?

%The people detector object detects people in an input image using the Histogram of Oriented Gradient (HOG) 

peopleDetector = vision.PeopleDetector;

%Tab_bboxes is table , contains a four-element vector, [x y width height]. 

%This vector specifies, in pixels, the upper-left corner and size, of a bounding box. 

Tab_bboxes =  multiObjectTracking();
I=imread('img.jpg');

[output] = peopleDetector(Tab_bboxes{54});

I have tried this but it does not work|

 Error in vision.PeopleDetector/validateInputsImpl (line 363)
            validateattributes(I,...

[Image Analyst]

I don't know what "the spet detection" method is. Presumably you know and you've already written it or have an algorithm for it and just need to make it into a function, perhaps from a script that it's in now - I don't know. Since you say " the" it's like you already have it. If you don't already have it, then I don't either and can't write it for you.

Try this link

and this one: http://www.visionbib.com/bibliography/contentsmedical.html#Medical%20Applications,%20CAT,%20MRI,%20Ultrasound,%20Heart%20Models,%20Brain%20Models

[EL BETAR DAOUD AHMED]

thank

Answer 2

[Walter Roberson]

Your line

[output] = peopleDetector(Tab_bboxes{54});

is equivalent to

[output] = step(peopleDetector, Tab_bboxes{54});

which is missing the ROI portion.

Your line

Tab_bboxes =  multiObjectTracking();

creates a multitracker object from the Automated Driving System Toolbox, https://www.mathworks.com/help/driving/examples/multiple-object-tracking-tutorial.html, the output of which is an object, not a cell array. The tracker needs to be be used with updateTracks() to find tracks.

[EL BETAR DAOUD AHMED]

I already have the function multiple-object-tracking.

It returning BBoxes for all move detection. it is a function

that returns everything that moves. I need to pass the BBoxies

that he has detect as a moving object to function that just

recognizes people in motion.

I want to use the function detection person to know if what the

function multiple object detect find are people or not

[Walter Roberson]

[output] = peopleDetector(I, Tab_bboxes{54});