How to make readAprilTag function recognize and process 36h9 tags?

"How to extend the readAprilTag function in the Computer Vision Toolbox to recognize Tag36h9 tags, since it is not currently supported? Thank you!"

Answer 1

[Gandham Heamanth]

Yes you are right 'Tag36h9' cannot be used in readAprilTag function but alt. u can use detectAprilTag function as follows:

% Load the image

image = imread('path_to_image.jpg');

% Convert the image to grayscale

grayImage = rgb2gray(image);

% Define the AprilTag detector parameters

tagFamily = 'Tag36h9';

detectorParams = aprilTagDetectorParameters('TagFamily', tagFamily);

% Detect and decode AprilTags in the image

[tagIds, tagPoses] = detectAprilTag(detectorParams, grayImage);

% Display the detected tags

imshow(image);

for i = 1:numel(tagIds)

text(tagPoses(i).Centroid(1), tagPoses(i).Centroid(2), num2str(tagIds(i)), 'Color', 'r');

end

[Guan Dongdong]

Dear answerer, thank you for your prompt reply. However, I tried your code in Matlab as instructed and received an error message saying that 'aprilTagDetectorParameters' is not recognized as a variable or function, and the same goes for 'detectAprilTag'. I am using Matlab 2022a, and I could not find any reference to 'aprilTagDetectorParameters' in the official documentation. Could you please let me know if this is a third-party compiled code or if my version is not compatible? Thank you.