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https://github.com/open-mmlab/mmsegmentation.git
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b4fd32d049
* [Feature]Segformer re-implementation * Using act_cfg and norm_cfg to control activation and normalization * Split this PR into several little PRs * Fix lint error * Remove SegFormerHead * [Feature] Add segformer decode head and related train config * Add ade20K trainval support for segformer 1. Add related train and val configs; 2. Add AlignedResize; * Set arg: find_unused_parameters = True * parameters init refactor * 1. Refactor segformer backbone parameters init; 2. Remove rebundant functions and unit tests; * Remove rebundant codes * Replace Linear Layer to 1X1 Conv * Use nn.ModuleList to refactor segformer head. * Remove local to_xtuple * 1. Remove rebundant codes; 2. Modify module name; * Refactor the backbone of segformer using mmcv.cnn.bricks.transformer.py * Fix some code logic bugs. * Add mit_convert.py to match pretrain keys of segformer. * Resolve some comments. * 1. Add some assert to ensure right params; 2. Support flexible peconv position; * Add pe_index assert and fix unit test. * 1. Add doc string for MixVisionTransformer; 2. Add some unit tests for MixVisionTransformer; * Use hw_shape to pass shape of feature map. * 1. Fix doc string of MixVisionTransformer; 2. Simplify MixFFN; 3. Modify H, W to hw_shape; * Add more unit tests. * Add doc string for shape convertion functions. * Add some unit tests to improve code coverage. * Fix Segformer backbone pretrain weights match bug. * Modify configs of segformer. * resolve the shape convertion functions doc string. * Add pad_to_patch_size arg. * Support progressive test with fewer memory cost. * Modify default value of pad_to_patch_size arg. * Temp code * Using processor to refactor evaluation workflow. * refactor eval hook. * Fix process bar. * Fix middle save argument. * Modify some variable name of dataset evaluate api. * Modify some viriable name of eval hook. * Fix some priority bugs of eval hook. * Fix some bugs about model loading and eval hook. * Add ade20k 640x640 dataset. * Fix related segformer configs. * Depreciated efficient_test. * Fix training progress blocked by eval hook. * Depreciated old test api. * Modify error patch size. * Fix pretrain of mit_b0 * Fix the test api error. * Modify dataset base config. * Fix test api error. * Modify outer api. * Build a sampler test api. * TODO: Refactor format_results. * Modify variable names. * Fix num_classes bug. * Fix sampler index bug. * Fix grammaly bug. * Add part of benchmark results. * Support batch sampler. * More readable test api. * Remove some command arg and fix eval hook bug. * Support format-only arg. * Modify format_results of datasets. * Modify tool which use test apis. * Update readme. * Update readme of segformer. * Updata readme of segformer. * Update segformer readme and fix segformer mit_b4. * Update readme of segformer. * Clean AlignedResize related config. * Clean code from pr #709 * Clean code from pr #709 * Add 512x512 segformer_mit-b5. * Fix lint. * Fix some segformer head bugs. * Add segformer unit tests. * Replace AlignedResize to ResizeToMultiple. * Modify readme of segformer. * Fix bug of ResizeToMultiple. * Add ResizeToMultiple unit tests. * Resolve conflict. * Simplify the implementation of ResizeToMultiple. * Update test results. * Fix multi-scale test error when resize_ratio=1.75 and input size=640x640. * Update segformer results. * Update Segformer results. * Fix some url bugs and pipelines bug. * Move ckpt convertion to tools. * Add segformer official pretrain weights usage. * Clean redundant codes. * Remove redundant codes. * Unfied format. * Add description for segformer converter. * Update workers.
77 lines
2.7 KiB
Python
77 lines
2.7 KiB
Python
import argparse
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from collections import OrderedDict
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import torch
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def mit_convert(ckpt):
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new_ckpt = OrderedDict()
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# Process the concat between q linear weights and kv linear weights
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for k, v in ckpt.items():
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if k.startswith('head'):
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continue
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# patch embedding convertion
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elif k.startswith('patch_embed'):
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stage_i = int(k.split('.')[0].replace('patch_embed', ''))
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new_k = k.replace(f'patch_embed{stage_i}', f'layers.{stage_i-1}.0')
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new_v = v
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if 'proj.' in new_k:
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new_k = new_k.replace('proj.', 'projection.')
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# transformer encoder layer convertion
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elif k.startswith('block'):
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stage_i = int(k.split('.')[0].replace('block', ''))
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new_k = k.replace(f'block{stage_i}', f'layers.{stage_i-1}.1')
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new_v = v
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if 'attn.q.' in new_k:
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sub_item_k = k.replace('q.', 'kv.')
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new_k = new_k.replace('q.', 'attn.in_proj_')
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new_v = torch.cat([v, ckpt[sub_item_k]], dim=0)
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elif 'attn.kv.' in new_k:
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continue
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elif 'attn.proj.' in new_k:
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new_k = new_k.replace('proj.', 'attn.out_proj.')
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elif 'attn.sr.' in new_k:
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new_k = new_k.replace('sr.', 'sr.')
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elif 'mlp.' in new_k:
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string = f'{new_k}-'
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new_k = new_k.replace('mlp.', 'ffn.layers.')
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if 'fc1.weight' in new_k or 'fc2.weight' in new_k:
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new_v = v.reshape((*v.shape, 1, 1))
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new_k = new_k.replace('fc1.', '0.')
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new_k = new_k.replace('dwconv.dwconv.', '1.')
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new_k = new_k.replace('fc2.', '4.')
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string += f'{new_k} {v.shape}-{new_v.shape}'
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# norm layer convertion
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elif k.startswith('norm'):
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stage_i = int(k.split('.')[0].replace('norm', ''))
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new_k = k.replace(f'norm{stage_i}', f'layers.{stage_i-1}.2')
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new_v = v
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else:
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new_k = k
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new_v = v
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new_ckpt[new_k] = new_v
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return new_ckpt
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def parse_args():
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parser = argparse.ArgumentParser(
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'Convert official segformer backbone weights to mmseg style.')
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parser.add_argument(
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'src', help='Source path of official segformer backbone weights.')
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parser.add_argument(
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'dst',
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help='Destination path of converted segformer backbone weights.')
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return parser.parse_args()
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if __name__ == '__main__':
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args = parse_args()
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src_path = args.src
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dst_path = args.dst
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ckpt = torch.load(src_path, map_location='cpu')
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ckpt = mit_convert(ckpt)
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torch.save(ckpt, dst_path)
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