Image Preprocessing and Optimizer Sensitivity: Implications for Convolutional Neural Networks in Diagnosing Brain Tumors0 views•2026•Engineering•Topical CollectionManikanta Manohar Pattisapu1, Suraj Aravind B.1, V. Venkateswara Rao P.2, V. N. Chandra Sekhar A.3Manikanta Manohar Pattisapu1Suraj Aravind B.1V. Venkateswara Rao P.2V. N. Chandra Sekhar A.31Gandhi Institute of Technology and Management (GITAM) Deemed to be University, 2Koneru Lakshmaiah Education Foundation, 3Sasi Institute of Technology & EngineeringGandhi Institute of Technology and Management (GITAM) Deemed to be UniversityKoneru Lakshmaiah Education FoundationSasi Institute of Technology & Engineering