[to #42322933] Add ofa-text-to-image-synthesis to maas lib

Link: https://code.alibaba-inc.com/Ali-MaaS/MaaS-lib/codereview/9590940

modelscope/metainfo.py

@@ -203,6 +203,7 @@ class Preprocessors(object):
 
     # multi-modal
     ofa_image_caption = 'ofa-image-caption'
+    ofa_text_to_image_synthesis = 'ofa-text-to-image-synthesis'
     mplug_visual_question_answering = 'mplug-visual-question-answering'
 
 

modelscope/models/multi_modal/__init__.py

@@ -20,7 +20,9 @@ else:
         'mmr': ['VideoCLIPForMultiModalEmbedding'],
         'mplug_for_visual_question_answering':
         ['MPlugForVisualQuestionAnswering'],
-        'ofa_for_all_tasks': ['OfaForAllTasks']
+        'ofa_for_all_tasks': ['OfaForAllTasks'],
+        'ofa_for_text_to_image_synthesis_model':
+        ['OfaForTextToImageSynthesis']
     }
 
     import sys

modelscope/models/multi_modal/ofa_for_text_to_image_synthesis_model.py

@@ -0,0 +1,90 @@
+import os
+from typing import Any, Dict
+
+import json
+import numpy as np
+import torch
+import torch.cuda
+from PIL import Image
+from taming.models.vqgan import GumbelVQ, VQModel
+
+from modelscope.metainfo import Models
+from modelscope.models.base import Model
+from modelscope.models.builder import MODELS
+from modelscope.models.multi_modal.ofa import OFAModel, OFATokenizer
+from modelscope.models.multi_modal.ofa.generate import sequence_generator as sg
+from modelscope.models.multi_modal.ofa.generate.search import Sampling
+from modelscope.models.multi_modal.ofa.generate.utils import move_to_device
+from modelscope.utils.constant import Tasks
+
+__all__ = ['OfaForTextToImageSynthesis']
+
+
+def custom_to_pil(x):
+    x = x.detach().cpu()
+    x = torch.clamp(x, -1., 1.)
+    x = (x + 1.) / 2.
+    x = x.permute(1, 2, 0).numpy()
+    x = (255 * x).astype(np.uint8)
+    x = Image.fromarray(x)
+    if not x.mode == 'RGB':
+        x = x.convert('RGB')
+    return x
+
+
+def load_vqgan(config, ckpt_path=None, is_gumbel=False):
+    if is_gumbel:
+        model = GumbelVQ(**config['model']['params'])
+    else:
+        model = VQModel(**config['model']['params'])
+    if ckpt_path is not None:
+        sd = torch.load(ckpt_path, map_location='cpu')['state_dict']
+        missing, unexpected = model.load_state_dict(sd, strict=False)
+    return model.eval()
+
+
+@MODELS.register_module(Tasks.text_to_image_synthesis, module_name=Models.ofa)
+class OfaForTextToImageSynthesis(Model):
+
+    def __init__(self, model_dir, *args, **kwargs):
+        super().__init__(model_dir=model_dir, *args, **kwargs)
+        # Initialize ofa
+        model = OFAModel.from_pretrained(model_dir)
+        self.model = model.module if hasattr(model, 'module') else model
+        self.tokenizer = OFATokenizer.from_pretrained(model_dir)
+        self.tokenizer.add_tokens(['<code_{}>'.format(i) for i in range(8192)])
+        self.tokenizer.add_tokens(['<bin_{}>'.format(i) for i in range(1000)])
+        self._device = torch.device('cuda') if torch.cuda.is_available() \
+            else torch.device('cpu')
+        self.model.to(self._device)
+
+        # Initialize vqgan
+        vqgan_config = json.load(
+            open(os.path.join(model_dir, 'vqgan_config.json')))
+        self.vqgan_model = load_vqgan(
+            vqgan_config,
+            ckpt_path=os.path.join(model_dir, 'vqgan_model.ckpt'),
+            is_gumbel=True).to(self._device)
+        # Initialize generator
+        sampling = Sampling(self.tokenizer, sampling_topp=0.9)
+        sg_args = {
+            'tokenizer': self.tokenizer,
+            'beam_size': 1,
+            'max_len_b': 1024,
+            'min_len': 1024,
+            'search_strategy': sampling,
+            'gen_code': True,
+            'constraint_range': '50265,58457'
+        }
+        self.generator = sg.SequenceGenerator(**sg_args)
+
+    def forward(self, input: Dict[str, Any]):
+        input = move_to_device(input, self._device)
+        gen_output = self.generator.generate([self.model], input)
+        gen_tokens = gen_output[0][0]['tokens'][:-1]
+        codes = gen_tokens.view(1, 32, 32) - 50265
+        quant_b = self.vqgan_model.quantize.get_codebook_entry(
+            codes.view(-1),
+            list(codes.size()) + [self.vqgan_model.quantize.embedding_dim])
+        dec = self.vqgan_model.decode(quant_b)[0]
+        return custom_to_pil(dec)

modelscope/pipelines/multi_modal/text_to_image_synthesis_pipeline.py

@@ -1,11 +1,13 @@
-from typing import Any, Dict
+from typing import Any, Dict, Optional
 
 import torch
 
 from modelscope.metainfo import Pipelines
+from modelscope.models.multi_modal import OfaForTextToImageSynthesis
 from modelscope.outputs import OutputKeys
 from modelscope.pipelines.base import Input, Model, Pipeline
 from modelscope.pipelines.builder import PIPELINES
+from modelscope.preprocessors import OfaPreprocessor, Preprocessor
 from modelscope.utils.constant import Tasks
 from modelscope.utils.logger import get_logger
 
@@ -17,7 +19,10 @@ logger = get_logger()
     module_name=Pipelines.text_to_image_synthesis)
 class TextToImageSynthesisPipeline(Pipeline):
 
-    def __init__(self, model: str, **kwargs):
+    def __init__(self,
+                 model: str,
+                 preprocessor: Optional[Preprocessor] = None,
+                 **kwargs):
         """
         use `model` and `preprocessor` to create a kws pipeline for prediction
         Args:
@@ -31,13 +36,20 @@ class TextToImageSynthesisPipeline(Pipeline):
         else:
             raise NotImplementedError(
                 f'expecting a Model instance or str, but get {type(model)}.')
+        if preprocessor is None and isinstance(pipe_model,
+                                               OfaForTextToImageSynthesis):
+            preprocessor = OfaPreprocessor(pipe_model.model_dir)
+        super().__init__(model=pipe_model, preprocessor=preprocessor, **kwargs)
 
-        super().__init__(model=pipe_model, **kwargs)
-
-    def preprocess(self, input: Input) -> Dict[str, Any]:
-        return input
+    def preprocess(self, input: Input, **preprocess_params) -> Dict[str, Any]:
+        if self.preprocessor is not None:
+            return self.preprocessor(input, **preprocess_params)
+        else:
+            return input
 
     def forward(self, input: Dict[str, Any]) -> Dict[str, Any]:
+        if isinstance(self.model, OfaForTextToImageSynthesis):
+            return self.model(input)
         return self.model.generate(input)
 
     def postprocess(self, inputs: Dict[str, Any]) -> Dict[str, Any]:

modelscope/preprocessors/multi_modal.py

@@ -23,6 +23,8 @@ __all__ = [
 
 @PREPROCESSORS.register_module(
     Fields.multi_modal, module_name=Preprocessors.ofa_image_caption)
+@PREPROCESSORS.register_module(
+    Fields.multi_modal, module_name=Preprocessors.ofa_text_to_image_synthesis)
 class OfaPreprocessor(Preprocessor):
 
     def __init__(self, model_dir: str, *args, **kwargs):
@@ -40,7 +42,8 @@ class OfaPreprocessor(Preprocessor):
             Tasks.visual_entailment: OfaVisualEntailmentPreprocessor,
             Tasks.image_classification: OfaImageClassificationPreprocessor,
             Tasks.text_classification: OfaTextClassificationPreprocessor,
-            Tasks.summarization: OfaSummarizationPreprocessor
+            Tasks.summarization: OfaSummarizationPreprocessor,
+            Tasks.text_to_image_synthesis: OfaTextToImageSynthesisPreprocessor
         }
         input_key_mapping = {
             Tasks.image_captioning: ['image'],
@@ -50,6 +53,7 @@ class OfaPreprocessor(Preprocessor):
             Tasks.visual_grounding: ['image', 'text'],
             Tasks.visual_question_answering: ['image', 'text'],
             Tasks.visual_entailment: ['image', 'text', 'text2'],
+            Tasks.text_to_image_synthesis: ['text']
         }
         model_dir = model_dir if osp.exists(model_dir) else snapshot_download(
             model_dir)

modelscope/preprocessors/ofa/__init__.py

@@ -3,6 +3,7 @@ from .image_captioning import OfaImageCaptioningPreprocessor
 from .image_classification import OfaImageClassificationPreprocessor
 from .summarization import OfaSummarizationPreprocessor
 from .text_classification import OfaTextClassificationPreprocessor
+from .text_to_image_synthesis import OfaTextToImageSynthesisPreprocessor
 from .visual_entailment import OfaVisualEntailmentPreprocessor
 from .visual_grounding import OfaVisualGroundingPreprocessor
 from .visual_question_answering import OfaVisualQuestionAnsweringPreprocessor

modelscope/preprocessors/ofa/text_to_image_synthesis.py

@@ -0,0 +1,31 @@
+# Copyright (c) Alibaba, Inc. and its affiliates.
+from typing import Any, Dict
+
+import torch
+
+from .base import OfaBasePreprocessor
+
+
+class OfaTextToImageSynthesisPreprocessor(OfaBasePreprocessor):
+
+    def __init__(self, cfg, model_dir):
+        """preprocess the data via the vocab.txt from the `model_dir` path
+
+        Args:
+            model_dir (str): model path
+        """
+        super(OfaTextToImageSynthesisPreprocessor,
+              self).__init__(cfg, model_dir)
+        self.max_src_length = 64
+
+    def __call__(self, data: Dict[str, Any]) -> Dict[str, Any]:
+        source = data['text'].lower().strip().split()[:self.max_src_length]
+        source = 'what is the complete image? caption: {}'.format(source)
+        inputs = self.get_inputs(source)
+        sample = {
+            'source': inputs,
+            'patch_images': None,
+            'patch_masks': torch.tensor([False]),
+            'code_masks': torch.tensor([False])
+        }
+        return sample

requirements/multi-modal.txt

@@ -6,6 +6,7 @@ pycocotools>=2.0.4
 # rough-score was just recently updated from 0.0.4 to 0.0.7
 # which introduced compatability issues that are being investigated
 rouge_score<=0.0.4
+taming-transformers-rom1504
 timm
 tokenizers
 torchvision

tests/pipelines/test_ofa_tasks.py

@@ -244,6 +244,25 @@ class OfaTasksTest(unittest.TestCase):
         result = ofa_pipe(input)
         print(result)
 
+    @unittest.skipUnless(test_level() >= 1, 'skip test in current test level')
+    def test_run_with_text_to_image_synthesis_with_name(self):
+        model = 'damo/ofa_text-to-image-synthesis_coco_large_en'
+        ofa_pipe = pipeline(Tasks.text_to_image_synthesis, model=model)
+        example = {'text': 'a bear in the water.'}
+        result = ofa_pipe(example)
+        result[OutputKeys.OUTPUT_IMG].save('result.png')
+        print(f'Output written to {osp.abspath("result.png")}')
+
+    @unittest.skipUnless(test_level() >= 1, 'skip test in current test level')
+    def test_run_with_text_to_image_synthesis_with_model(self):
+        model = Model.from_pretrained(
+            'damo/ofa_text-to-image-synthesis_coco_large_en')
+        ofa_pipe = pipeline(Tasks.text_to_image_synthesis, model=model)
+        example = {'text': 'a bear in the water.'}
+        result = ofa_pipe(example)
+        result[OutputKeys.OUTPUT_IMG].save('result.png')
+        print(f'Output written to {osp.abspath("result.png")}')
+
 
 if __name__ == '__main__':
     unittest.main()