1. An agricultural harvesting machine including a control arrangement comprising an optical sensor device for recording image series of a continuous main crop stream, an evaluation device for ascertaining a portion of damaged grain, a portion of non-grain in the main crop stream or both, based on an image analysis of the recorded image series and a visualization device for displaying the portion of damaged grain and/or the portion of non-grain, wherein the control arrangement cyclically records the image series of the continuous main crop stream and, within a predetermined processing time after the image series has been recorded, displays a current portion of damaged grain, a current portion of non-grain or both, based on the image series, wherein the portion of damaged grain, the portion of non-grain or both, is extrapolated to a throughput of the continuous main crop stream by relating a measured surface area-portion of damaged grain, a measured surface-area portion of non-grain or both, of at least one image in the image series to a volume portion of damaged grain, a volume portion of non-grain or both, by use of a crop-dependent correction factor.