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ExperimentalDetectronTopKROIs

Versioned name : ExperimentalDetectronTopKROIs-6

Category : Sorting and maximization

Short description : The ExperimentalDetectronTopKROIs operation is TopK operation applied to probabilities of input ROIs.

Detailed description : The operation performs probabilities descending sorting for input ROIs and returns max_rois number of ROIs. Order of sorted ROIs with equal probabilities is undefined. If the number of ROIs is less than max_rois then operation returns all ROIs descended sorted and the output tensor is filled with undefined values for the rest of output tensor elements.

Attributes :

• max_rois

  • Description : The max_rois attribute specifies maximal numbers of output ROIs.

  • Range of values : non-negative integer number

  • Type : int

  • Default value : 0

  • Required : no

Inputs

• 1 : A 2D tensor of type T with shape [number_of_ROIs, 4] describing the ROIs as 4-tuples: [x 1, y 1, x 2, y 2]. Required.

• 2 : A 1D tensor of type T with shape [number_of_input_ROIs] contains probabilities for input ROIs. Required.

Outputs

• 1 : A 2D tensor of type T with shape [max_rois, 4] describing max_rois ROIs with highest probabilities.

Types

• T : any supported floating-point type.

Example

<layer ... type="ExperimentalDetectronTopKROIs" version="opset6">
    <data max_rois="1000"/>
    <input>
        <port id="0">
            <dim>5000</dim>
            <dim>4</dim>
        </port>
        <port id="1">
            <dim>5000</dim>
        </port>
    </input>
    <output>
        <port id="2" precision="FP32">
            <dim>1000</dim>
            <dim>4</dim>
        </port>
    </output>
</layer>

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