1. A system for applying optical flow sensing for agricultural vehicles, the system comprising: an image capture controller to obtain a plurality of digital images of an agricultural environment from a sensor affixed to agricultural equipment (AEQ), the plurality of digital images including a first image and a second image, the second image being captured subsequent to the first image, the agricultural environment including an object that is an implement affixed to the AE at a fixation point; an optical flow circuit set to identify a transformation of a landmark between the first image and the second image, the landmark being common to the first image and the second image; and a physical environment circuit set to calculate a degree of motion for the AEQ relative to an environmental target based on the transformation of the landmark, the degree of motion including a degree of motion between the AEQ and the object determined by: measuring a deformation of a shaft affixed the implement to the AEQ between the first image and the second image from the degree of motion; and converting the deformation into a bending moment measurement.