During the industrial pecan cracking and shelling process, kernels are often damaged. To address this problem, a study is conducted to experimentally determine the effect of impactor geometry for end-to-end pecan cracking. In parallel, a software program is developed quantitatively assess the performance of each impactor. Four impactors of varying internal angles (from 30 to 52.5, in increments of 7.5) are tested. After cracking, the pecans are passed through a software program that detects, classifies, and measures pecan cracks using image processing techniques. The software is calibrated and validated using sets of 30 and 380 pecans, respectively. With the validation set, the software accurately detected 90.6% of cracks, classified cracks with an accuracy of 98.7%, and produced crack measurements within 10% of manual measurements. Using this software, pecan impactors are analyzed by categorizing each pecan into one of four categories: under crack, standard crack, ideal crack, or over crack. Cracked and ideally cracked pecans are preferred for their processability, so the impactor geometries are then evaluated based on their ability to maximize these crack types across the widest impact energy range. For the four impactors tested, the 30 impactor is found to more consistently produce preferred cracks in a larger energy range relative to the other impactors.