TY - 数学物理学报(英文版) A1 - 毕文姗, 程冬, 刘万凯, 高洁欣 T1 - A ROBUST COLOR EDGE DETECTION ALGORITHM BASED ON THE QUATERNION HARDY FILTER Y1 - JF - Acta Mathematica Scientia JO - 数学物理学报(英文版) SP - 1238 EP - 1260 VL - 42 IS - 3 UR - http://121.43.60.238/sxwlxbB N1 - 10.1007/s10473-022-0325-3 ER -