Attribute on .arff file Trainable Weka Segmentation

Hi,
I’m using the Trainable Weka Segmentation, and when I generate the file .arff, exists in the header a attribute: “original @attribute numeric”. I wonder if anyone knows what referred this attribute present in the data of analyzed image.

best regards.

Welcome to the forum, @Davi_Marcondes_Rocha!

The original attribute is the original image, i.e. the raw pixel values of the image that are always included as a first slice in the feature stack.

See also the documentation:

When using grayscale images, the input image will be also included as a feature. In the case of color (RGB) images, the Hue, Saturation and Brightness will be as well part of the features.

An easy way to look at all the features computed is to save the feature stack from the Settings dialog of the Trainable Weka Segmentation plugin.

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Thanks @imagejan, I was not sure, because the image is a color image, and contains in addition the attributes, hue, saturation and brightness, the original. But now I understand. I saved the image stack and I saw all the features present in the image. Thank you so much!