ActivFeatureHistogram analyzes all types of numeric features and displays them both optically and statistically. It provides you interesting detail information about the detected objects. Thus, it is a great help for configuring the image processing parameters and for determining feature value ranges for separating good objects from bad ones. ActivFeatureHistogram makes it easy to interactively define a feature-based selection by directly displaying the selection results - the extracted objects or blobs - overlayed to the input image.