Downsample¶
This tool uses 2.0 compute credits per hour.
Overview¶
The downsampling tool allows you to downsample miniscope movies spatially and temporally.
Inputs¶
| Parameter | Required? | Default | Description |
|---|---|---|---|
| Input Movie Files | True | N/A | paths to the input movie files |
| Temporal Downsample Factor | True | 1 | Factor by which the movie is to be temporally downsampled |
| Spatial Downsample Factor | True | 1 | Factor by which the movie is to be spatially downsampled |
File Inputs¶
| Source Parameter | File Type | File Format |
|---|---|---|
| Input Movie Files | miniscope_movie, miniscope_movie | isxd, isxc |
Description¶
Downsampling is used to reduce the data before moving on to further processing and analysis.
Formally, temporal downsampling works by averaging n adjacent frames, where n is the
temporal downsample factor.
The moving average stride is equal to the temporal downsample factor, which results in
non-overlapping groups of frames to be averaged.
This is equal to binning the frame data in time (in bins defined by the temporal downsample factor)
and the subsequent averaging of each bin.
The resulting number of frames equals the original number of frames divided by the temporal downsample
factor, rounded down.
Spatial downsampling works similarly, except that the spatial bins are non-overlapping
sub-images of the original frames.