Create bagofFeatures for code generation

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Michael Sorocky 2023-6-20

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https://ww2.mathworks.cn/matlabcentral/answers/1985844-create-bagoffeatures-for-code-generation

评论： Sahithi Kanumarlapudi 2023-9-8

I'm trying to create a bagOfFeatures for use in a script that will be compiled to C code. The help page for bagOfFeatures states:

For code generation, the bagOfFeatures function does not support the ImageDatastore object as input. Instead, specify the input as a structure with fields Images and Labels. The Images field must contain a cell array of grayscale or RGB color images. The Labels field must contain image labels stored as categorical arrays.

As a result, I cannot use the constructers of the form

bag = bagOfFeatures(imds)

However, if I try to create a structure imds with fields Images and Labels as suggested, I recieve the following error when I run

bofData = bagOfFeatures(imds);

Error using bagOfFeatures/parseInputs

The value of 'imds' is invalid. Expected imds to be one of these types:

imageSet, matlab.io.datastore.ImageDatastore

Instead its type was struct.

This seems to indicate I cannot pass a structure as suggested - how can I create a bagOfFeatures using the specified input? I don't see a Name/Value pair related to this.

Thanks in advance!

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Anush 2023-6-20

在 MATLAB Online 中打开

You can try checking out the code with:

edit bagOfFeatures.m

Sahithi Kanumarlapudi 2023-9-8

Hi Michael,

Could you attach the script that you have used to create the struct and the script you used to do codegen. It would help us in understanding the issue better.

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