Melanoma segmentation: A framework of improved DenseNet77 and UNET convolutional neural network. - Marriam Nawaz; Tahira Nazir; Momina Masood; Farooq Ali; Muhammad Attique Khan; Usman Tariq; Naveera Sahar; Robertas Damasevicius (Int. J. Imaging Syst. Technol., 2022)