# upper_left_x, upper_left_y, lower_right_x, lower_right_y
train_piano_coords = [(68,674,1869,863), (38,680,1882,875), (42,678,1870,874), (42,678,1870,874),
               (44,670,1876,865), (35,678,1875,869), (30,451,1249,583), (28,454,1254,584),
               (39,678,1886,881), (33,671,1886,860), (29,446,1252,576), (26,447,1252,577),
               (42,673,1879,871), (43,669,1870,869), (45,675,1864,870), (53,674,1868,860),
               (51,679,1866,866), (51,674,1861,861), (48,674,1878,861), (45,671,1879,870),
               (50,671,1879,866), (54,670,1864,863), (50,670,1870,867), (43,673,1882,869)]

test_piano_coords = [(41,679,1880,881), (43,675,1883,875), (40,671,1879,871)]