I can't use the function minibatchqueue. Maybe I don't know where to find the supporting function 'createBatchData'

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泽宇王 2021-3-30

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https://ww2.mathworks.cn/matlabcentral/answers/787709-i-can-t-use-the-function-minibatchqueue-maybe-i-don-t-know-where-to-find-the-supporting-function-c

评论：泽宇王 2021-4-1

I'm lerning yolo v3 with https://ww2.mathworks.cn/help/vision/ug/object-detection-using-yolo-v3-deep-learning.html?searchHighlight=YOLO&s_tid=srchtitle

In the passage, it says "Use the minibatchqueue function to split the preprocessed training data into batches with the supporting function createBatchData which returns the batched images and bounding boxes combined with the respective class IDs.

code is here:

mbqTrain = minibatchqueue(preprocessedTrainingData, 2,...

"MiniBatchSize", miniBatchSize,...

"MiniBatchFcn", @(images, boxes, labels) createBatchData(images, boxes, labels, classNames), ...

"MiniBatchFormat", ["SSCB", ""],...

"DispatchInBackground", dispatchInBackground,...

"OutputCast", ["", "double"]);

But I can't use it, because it says the function "createBatchData" is not defined.

So what is the supporting function createBatchData?

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Answer 1

Mahesh Taparia 2021-4-1

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https://ww2.mathworks.cn/matlabcentral/answers/787709-i-can-t-use-the-function-minibatchqueue-maybe-i-don-t-know-where-to-find-the-supporting-function-c#answer_664474

Hi

The function createBatchData supporting function is present in the example of YOLO v3 object detctor. You can find it here. Place this function in the working folder as a separate file or place at the bottom of the training script.