Adding another pipeline step

Pachyderm pipelines can be chained into multi-step workflows. For each step, you will need to have a separate pipeline specification and a Docker image if you are using one. In this section, we will add another step to our image processing workflow. We will use the skimage.exposure.histogram module to create histograms of all the images we have in our contour output repository.

Example overview

A histogram is a visual representation of data that provides information about the image, such as the number of pixels, their intensity, and other information. Because we represent images as numerical data, we can create a histogram for each of the images we processed in the first step of our workflow – the contour pipeline. In this new step of the workflow, we will create histograms for each image that has landed in the contour output repository and save them in the histogram output repository in PNG format.

Here is an example of a histogram that...