I'm new to the topic, but I've used some off the shelf knowledge about computer vision for classifying images.
For example, you can easily generate labels that can determine whether or not e.g. a cloud is in the image. However, what is the general type of problem called where you want to assign a value, or rate the image on a scale - in this example, the degree of cloudiness in the image?
What are useful algorithms or techniques for addressing this type of problem?