Slice Layer

[hedaoyuan]

Need to add Slice layer to support image detection applications. For example, slices an input image containing multiple channels into multiple outputs according to the specified indexes.

[hedaoyuan]

In the image detection need to support the slice operation, the NCHW format image data can be sliced according to C dimensions, and the multiple outputs after slicing can be reassembled into a new output.
Such as the operation shown below.

[hedaoyuan]

SliceProjection(slice)

SliceProjection can slice the input value into multiple parts, and then select some of them to merge into a new output.
The operations in SliceProjection include the following two parts:

1. Calculate the slices that need to be merged into the output. (Get slice1-a, slice1-c, slice-a as the output slices of image1)
2. Merge each slice into the output. (Merge the slice1-a, slice1-c, slice-a as a part of the final output)