Support DataDistributedParallel and Change Augmentation

[toandaominh1997]

• Support parallel both DistributedDataParallel and DataParallel
• Change resize image
• Fix eval_voc.py

[pep8speaks]

Hello @toandaominh1997! Thanks for opening this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file datasets/__init__.py:

Line 3:80: E501 line too long (104 > 79 characters)

• In the file datasets/augmentation.py:

Line 68:1: E302 expected 2 blank lines, found 1 Line 114:80: E501 line too long (102 > 79 characters) Line 149:80: E501 line too long (92 > 79 characters)

• In the file datasets/voc0712.py:

Line 119:1: W293 blank line contains whitespace Line 122:1: W293 blank line contains whitespace Line 133:5: E301 expected 1 blank line, found 0 Line 140:39: E228 missing whitespace around modulo operator Line 143:19: W292 no newline at end of file

• In the file demo.py:

Line 50:80: E501 line too long (92 > 79 characters)

• In the file eval_voc.py:

Line 29:80: E501 line too long (111 > 79 characters) Line 30:80: E501 line too long (111 > 79 characters) Line 35:80: E501 line too long (91 > 79 characters) Line 71:80: E501 line too long (98 > 79 characters) Line 74:80: E501 line too long (93 > 79 characters) Line 76:80: E501 line too long (81 > 79 characters) Line 80:80: E501 line too long (84 > 79 characters) Line 82:80: E501 line too long (82 > 79 characters) Line 84:80: E501 line too long (96 > 79 characters) Line 87:1: W293 blank line contains whitespace Line 95:80: E501 line too long (107 > 79 characters) Line 98:18: E221 multiple spaces before operator Line 113:28: E221 multiple spaces before operator Line 114:29: E221 multiple spaces before operator Line 115:29: E221 multiple spaces before operator Line 116:80: E501 line too long (148 > 79 characters) Line 120:80: E501 line too long (106 > 79 characters) Line 134:80: E501 line too long (80 > 79 characters) Line 138:80: E501 line too long (83 > 79 characters) Line 140:80: E501 line too long (101 > 79 characters) Line 148:80: E501 line too long (90 > 79 characters) Line 165:80: E501 line too long (80 > 79 characters) Line 167:80: E501 line too long (98 > 79 characters) Line 170:80: E501 line too long (80 > 79 characters) Line 177:5: E303 too many blank lines (3) Line 179:19: E221 multiple spaces before operator Line 179:80: E501 line too long (147 > 79 characters) Line 180:20: E221 multiple spaces before operator Line 186:23: E221 multiple spaces before operator Line 187:15: E221 multiple spaces before operator Line 191:23: E221 multiple spaces before operator Line 192:24: E221 multiple spaces before operator Line 193:28: E221 multiple spaces before operator Line 201:35: E221 multiple spaces before operator Line 204:25: E221 multiple spaces before operator Line 204:80: E501 line too long (93 > 79 characters) Line 206:28: E221 multiple spaces before operator Line 208:80: E501 line too long (100 > 79 characters) Line 210:35: E221 multiple spaces before operator Line 214:35: E221 multiple spaces before operator Line 222:16: E221 multiple spaces before operator Line 224:23: E221 multiple spaces before operator Line 228:23: E221 multiple spaces before operator Line 231:15: E221 multiple spaces before operator Line 232:80: E501 line too long (107 > 79 characters) Line 235:26: E221 multiple spaces before operator Line 237:1: W293 blank line contains whitespace Line 244:1: W293 blank line contains whitespace Line 249:1: E303 too many blank lines (3) Line 255:80: E501 line too long (97 > 79 characters) Line 260:80: E501 line too long (93 > 79 characters) Line 266:1: E303 too many blank lines (3) Line 272:38: W291 trailing whitespace Line 285:80: E501 line too long (83 > 79 characters) Line 286:38: E127 continuation line over-indented for visual indent Line 286:80: E501 line too long (93 > 79 characters)

• In the file models/efficientdet.py:

Line 69:80: E501 line too long (93 > 79 characters)

• In the file models/losses.py:

Line 51:80: E501 line too long (94 > 79 characters) Line 52:80: E501 line too long (98 > 79 characters) Line 91:80: E501 line too long (127 > 79 characters) Line 122:80: E501 line too long (99 > 79 characters) Line 136:80: E501 line too long (94 > 79 characters)

• In the file train.py:

Line 33:80: E501 line too long (141 > 79 characters) Line 85:80: E501 line too long (80 > 79 characters) Line 92:1: E303 too many blank lines (3) Line 103:80: E501 line too long (83 > 79 characters) Line 137:1: E302 expected 2 blank lines, found 1 Line 150:80: E501 line too long (85 > 79 characters) Line 167:1: W293 blank line contains whitespace Line 169:5: E303 too many blank lines (2) Line 174:22: E128 continuation line under-indented for visual indent Line 174:26: E251 unexpected spaces around keyword / parameter equals Line 197:80: E501 line too long (80 > 79 characters) Line 211:1: E115 expected an indented block (comment) Line 212:1: E115 expected an indented block (comment) Line 212:80: E501 line too long (179 > 79 characters) Line 214:80: E501 line too long (106 > 79 characters) Line 217:5: E303 too many blank lines (2) Line 218:80: E501 line too long (114 > 79 characters) Line 219:80: E501 line too long (124 > 79 characters) Line 235:80: E501 line too long (89 > 79 characters) Line 245:80: E501 line too long (104 > 79 characters) Line 286:11: W292 no newline at end of file

• In the file utils/helper.py:

Line 22:1: E302 expected 2 blank lines, found 1