Bug introduced in 10.3 or earlier and persisting through 11.3

obj = ResourceObject["CIFAR-10"];
trainingData = ResourceData[obj, "TrainingData"];
imgTest = trainingData[[29562]][[1]]
ImageKeypoints[ImageResize[imgTest, 256], "Descriptor"][[112]]

Since this causes a bug of my post codes[ClusteringCompoment of codebook]...I wonder is this a bug of ImageKeypoint or it's a feature?

Background: the bag of words example in the HelpPage of ImageKeypoint.

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  • 2
    $\begingroup$ Standard bugs header? Also here. $\endgroup$
    – Michael E2
    Commented Oct 28, 2018 at 12:46
  • $\begingroup$ I don't see the bug in 10.0.2, but in that version the output is quite different. I don't have 10.1 and 10.2. $\endgroup$
    – Szabolcs
    Commented Oct 30, 2018 at 16:58
  • $\begingroup$ @Szabolcs I've edited to Mma 11.3 $\endgroup$ Commented Oct 31, 2018 at 3:42
  • $\begingroup$ I have actually tested 10.3 and several newer versions, up to 11.3 and it was present in all of them. $\endgroup$
    – Szabolcs
    Commented Oct 31, 2018 at 6:56

1 Answer 1


I believe this is a bug. NaN` is not a value that can be safely computed with. It really should not arise when using normal documented functions. Please report this to support.


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