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openvino/docs/ops/shape/Unsqueeze_1.md
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Updated from 2020.3 to 2020.4

Co-authored-by: domi2000 <domi2000@users.noreply.github.com>
2020-07-20 17:36:08 +03:00

1.4 KiB

Unsqueeze

Versioned name: Unsqueeze-1

Category: Shape manipulation

Short description: Unsqueeze adds dimensions of size 1 to the first input tensor. The second input value specifies a list of dimensions that will be inserted. Indices specify dimensions in the output tensor.

Attributes: Unsqueeze operation doesn't have attributes.

Inputs:

  • 1: Multidimensional input tensor. Required.

  • 2: OD or 1D tensor with dimensions indices to be set to 1. Values could be negative. Indices could be integer or float values.

Example

Example 1:

<layer ... type="Unsqueeze">
    <input>
        <port id="0">
            <dim>2</dim>
            <dim>3</dim>
        </port>
    </input>
    <input>
        <port id="1">
            <dim>2</dim>  <!-- value is [0, 3] -->
        </port>
    </input>
    <output>
        <port id="2">
            <dim>1</dim>
            <dim>2</dim>
            <dim>3</dim>
            <dim>1</dim>
        </port>
    </output>
</layer>

Example 2: (unsqueeze 0D tensor (constant) to 1D tensor)

<layer ... type="Unsqueeze">
    <input>
        <port id="0">
        </port>
    </input>
    <input>
        <port id="1">
            <dim>1</dim>  <!-- value is [0] -->
        </port>
    </input>
    <output>
        <port id="2">
            <dim>1</dim>
        </port>
    </output>
</layer>