Matlab code projects support various file formats including .prj, .mlappinstall, .m, and .mex files. Recent model codes discussed include Prewitt filter, Canny Edge filter, saturation modification, and contrast enhancement. The document also provides several hi-tech topic ideas for Matlab projects such as logistic regression, heart sound segmentation, activation time imaging, route algorithms, muscle fiber tracking, and malaria detection. Contact details are provided at the end for any additional questions.