zhangyx96 / THU-Matlab-Course

the homework for the Matlab course of professor Gu Yuantao

ImageProcessing

TASK 1 Basic operation with image

• Draw a circle [m2_1_1]
• Draw black and white gum [m2_1_2]

TASK 2 Image Compression

• Grey sacle modification [m2_2_1]
• 2-D DCT transformation [m2_2_2]
• modify the parameters of DCT matrix [m2_2_3/m2_2_4]
• frequecy response [m2_2_5]
• caculate the category [m2_2_6]
• zig-zag [m2_2_7]
• JEPG compression [m2_2_9/m2_2_10/m2_2_11]

TASK 3 Encryption and Decryption

• Encryption and decryption in spatial domain [m2_3_1a/b/c]
• Encryption and decryption in DCT domain [m2_3_2a/b/c]

TASK 4 Face Recognizition

• train the criterion vector [m2_4_1]
• face detection [m2_4_2]