Ola 7b

🚀 Ola-7B

Ola-7B模型由來自騰訊、清華大學和南洋理工大學的人員開發。它基於Qwen2.5語言模型，在文本、圖像、視頻和音頻數據上進行訓練，上下文窗口為32K個標記。該模型可以接受圖像、視頻、文本和音頻作為輸入，並輸出文本。Ola提供了一種按需解決方案，能夠無縫高效地處理任意空間大小和時間長度的視覺輸入。

🚀 快速開始

準備工作

1. 從https://huggingface.co/THUdyh/Ola_speech_encoders 下載語音編碼器。
2. 將config.json中的路徑替換為語音編碼器的本地路徑。

簡單使用示例

我們提供了一個簡單的生成過程來使用我們的模型。更多詳細信息，請參考我們的Github倉庫。

import os
os.environ['LOWRES_RESIZE'] = '384x32'
os.environ['HIGHRES_BASE'] = '0x32'
os.environ['VIDEO_RESIZE'] = "0x64"
os.environ['VIDEO_MAXRES'] = "480"
os.environ['VIDEO_MINRES'] = "288"
os.environ['MAXRES'] = '1536'
os.environ['MINRES'] = '0'
os.environ['REGIONAL_POOL'] = '2x'
os.environ['FORCE_NO_DOWNSAMPLE'] = '1'
os.environ['LOAD_VISION_EARLY'] = '1'
os.environ['SKIP_LOAD_VIT'] = '1'
    

import gradio as gr
import torch
import re
from decord import VideoReader, cpu
from PIL import Image
import numpy as np
import transformers
import moviepy.editor as mp
from typing import Dict, Optional, Sequence, List
import librosa
import whisper
from ola.conversation import conv_templates, SeparatorStyle
from ola.model.builder import load_pretrained_model
from ola.utils import disable_torch_init
from ola.datasets.preprocess import tokenizer_image_token, tokenizer_speech_image_token, tokenizer_speech_question_image_token
from ola.mm_utils import get_model_name_from_path, KeywordsStoppingCriteria, process_anyres_video, process_anyres_highres_image_genli
from ola.constants import IGNORE_INDEX, DEFAULT_IMAGE_TOKEN, IMAGE_TOKEN_INDEX, DEFAULT_SPEECH_TOKEN

model_path = ""
tokenizer, model, image_processor, _ = load_pretrained_model(model_path, None)
model = model.to('cuda').eval()
model = model.bfloat16()

USE_SPEECH=False
cur_dir = os.path.dirname(os.path.abspath(__file__))


def load_audio(audio_file_name):
    speech_wav, samplerate = librosa.load(audio_file_name, sr=16000)
    if len(speech_wav.shape) > 1:
        speech_wav = speech_wav[:, 0]
    speech_wav = speech_wav.astype(np.float32)
    CHUNK_LIM = 480000
    SAMPLE_RATE = 16000
    speechs = []
    speech_wavs = []

    if len(speech_wav) <= CHUNK_LIM:
        speech = whisper.pad_or_trim(speech_wav)
        speech_wav = whisper.pad_or_trim(speech_wav)
        speechs.append(speech)
        speech_wavs.append(torch.from_numpy(speech_wav).unsqueeze(0))
    else:
        for i in range(0, len(speech_wav), CHUNK_LIM):
            chunk = speech_wav[i : i + CHUNK_LIM]
            if len(chunk) < CHUNK_LIM:
                chunk = whisper.pad_or_trim(chunk)
            speechs.append(chunk)
            speech_wavs.append(torch.from_numpy(chunk).unsqueeze(0))
    mels = []
    for chunk in speechs:
        chunk = whisper.log_mel_spectrogram(chunk, n_mels=128).permute(1, 0).unsqueeze(0)
        mels.append(chunk)

    mels = torch.cat(mels, dim=0)
    speech_wavs = torch.cat(speech_wavs, dim=0)
    if mels.shape[0] > 25:
        mels = mels[:25]
        speech_wavs = speech_wavs[:25]

    speech_length = torch.LongTensor([mels.shape[1]] * mels.shape[0])
    speech_chunks = torch.LongTensor([mels.shape[0]])
    return mels, speech_length, speech_chunks, speech_wavs

def extract_audio(videos_file_path):
    my_clip = mp.VideoFileClip(videos_file_path)
    return my_clip.audio

def ola_inference(multimodal, audio_path):
    visual, text = multimodal["files"][0], multimodal["text"]
    if visual.endswith("image2.png"):
        modality = "video"
        visual = f"{cur_dir}/case/case1.mp4"
    if visual.endswith(".mp4"):
        modality = "video"
    else:
        modality = "image"
    
    # input audio and video, do not parse audio in the video, else parse audio in the video
    if audio_path:
        USE_SPEECH = True
    elif modality == "video":
        USE_SPEECH = True
    else:
        USE_SPEECH = False
    
    speechs = []
    speech_lengths = []
    speech_wavs = []
    speech_chunks = []
    if modality == "video":
        vr = VideoReader(visual, ctx=cpu(0))
        total_frame_num = len(vr)
        fps = round(vr.get_avg_fps())
        uniform_sampled_frames = np.linspace(0, total_frame_num - 1, 64, dtype=int)
        frame_idx = uniform_sampled_frames.tolist()
        spare_frames = vr.get_batch(frame_idx).asnumpy()
        video = [Image.fromarray(frame) for frame in spare_frames]
    else:
        image = [Image.open(visual)]
        image_sizes = [image[0].size]

    if USE_SPEECH and audio_path:
        audio_path = audio_path
        speech, speech_length, speech_chunk, speech_wav = load_audio(audio_path)
        speechs.append(speech.bfloat16().to('cuda'))
        speech_lengths.append(speech_length.to('cuda'))
        speech_chunks.append(speech_chunk.to('cuda'))
        speech_wavs.append(speech_wav.to('cuda'))
        print('load audio')
    elif USE_SPEECH and not audio_path:
        # parse audio in the video
        audio = extract_audio(visual)
        audio.write_audiofile("./video_audio.wav")
        video_audio_path = './video_audio.wav'
        speech, speech_length, speech_chunk, speech_wav = load_audio(video_audio_path)
        speechs.append(speech.bfloat16().to('cuda'))
        speech_lengths.append(speech_length.to('cuda'))
        speech_chunks.append(speech_chunk.to('cuda'))
        speech_wavs.append(speech_wav.to('cuda'))
    else:
        speechs = [torch.zeros(1, 3000, 128).bfloat16().to('cuda')]
        speech_lengths = [torch.LongTensor([3000]).to('cuda')]
        speech_wavs = [torch.zeros([1, 480000]).to('cuda')]
        speech_chunks = [torch.LongTensor([1]).to('cuda')]
    
    conv_mode = "qwen_1_5"
    if text:
        qs = text
    else:
        qs = ''
    if USE_SPEECH and audio_path:
        qs = DEFAULT_IMAGE_TOKEN + "\n" + "User's question in speech: " + DEFAULT_SPEECH_TOKEN + '\n'
    elif USE_SPEECH:
        qs = DEFAULT_SPEECH_TOKEN + DEFAULT_IMAGE_TOKEN + "\n" + qs
    else:
        qs = DEFAULT_IMAGE_TOKEN + "\n" + qs

    conv = conv_templates[conv_mode].copy()
    conv.append_message(conv.roles[0], qs)
    conv.append_message(conv.roles[1], None)
    prompt = conv.get_prompt()
    if USE_SPEECH and audio_path:
        input_ids = tokenizer_speech_question_image_token(prompt, tokenizer, IMAGE_TOKEN_INDEX, return_tensors="pt").unsqueeze(0).to('cuda')
    elif USE_SPEECH:
        input_ids = tokenizer_speech_image_token(prompt, tokenizer, IMAGE_TOKEN_INDEX, return_tensors="pt").unsqueeze(0).to('cuda')
    else:
        input_ids = tokenizer_image_token(prompt, tokenizer, IMAGE_TOKEN_INDEX, return_tensors="pt").unsqueeze(0).to('cuda')

    if modality == "video":
        video_processed = []
        for idx, frame in enumerate(video):
            image_processor.do_resize = False
            image_processor.do_center_crop = False
            frame = process_anyres_video(frame, image_processor)

            if frame_idx is not None and idx in frame_idx:
                video_processed.append(frame.unsqueeze(0))
            elif frame_idx is None:
                video_processed.append(frame.unsqueeze(0))
        
        if frame_idx is None:
            frame_idx = np.arange(0, len(video_processed), dtype=int).tolist()
        
        video_processed = torch.cat(video_processed, dim=0).bfloat16().to("cuda")
        video_processed = (video_processed, video_processed)

        video_data = (video_processed, (384, 384), "video")
    else:
        image_processor.do_resize = False
        image_processor.do_center_crop = False
        image_tensor, image_highres_tensor = [], []
        for visual in image:
            image_tensor_, image_highres_tensor_ = process_anyres_highres_image_genli(visual, image_processor)
            image_tensor.append(image_tensor_)
            image_highres_tensor.append(image_highres_tensor_)
        if all(x.shape == image_tensor[0].shape for x in image_tensor):
            image_tensor = torch.stack(image_tensor, dim=0)
        if all(x.shape == image_highres_tensor[0].shape for x in image_highres_tensor):
            image_highres_tensor = torch.stack(image_highres_tensor, dim=0)
        if type(image_tensor) is list:
            image_tensor = [_image.bfloat16().to("cuda") for _image in image_tensor]
        else:
            image_tensor = image_tensor.bfloat16().to("cuda")
        if type(image_highres_tensor) is list:
            image_highres_tensor = [_image.bfloat16().to("cuda") for _image in image_highres_tensor]
        else:
            image_highres_tensor = image_highres_tensor.bfloat16().to("cuda")

    pad_token_ids = 151643

    attention_masks = input_ids.ne(pad_token_ids).long().to('cuda')
    stop_str = conv.sep if conv.sep_style != SeparatorStyle.TWO else conv.sep2
    keywords = [stop_str]
    stopping_criteria = KeywordsStoppingCriteria(keywords, tokenizer, input_ids)

    gen_kwargs = {}

    if "max_new_tokens" not in gen_kwargs:
        gen_kwargs["max_new_tokens"] = 1024
    if "temperature" not in gen_kwargs:
        gen_kwargs["temperature"] = 0.2
    if "top_p" not in gen_kwargs:
        gen_kwargs["top_p"] = None
    if "num_beams" not in gen_kwargs:
        gen_kwargs["num_beams"] = 1

    with torch.inference_mode():
        if modality == "video":
            output_ids = model.generate(
                inputs=input_ids,
                images=video_data[0][0],
                images_highres=video_data[0][1],
                modalities=video_data[2],
                speech=speechs,
                speech_lengths=speech_lengths,
                speech_chunks=speech_chunks,
                speech_wav=speech_wavs,
                attention_mask=attention_masks,
                use_cache=True,
                stopping_criteria=[stopping_criteria],
                do_sample=True if gen_kwargs["temperature"] > 0 else False,
                temperature=gen_kwargs["temperature"],
                top_p=gen_kwargs["top_p"],
                num_beams=gen_kwargs["num_beams"],
                max_new_tokens=gen_kwargs["max_new_tokens"],
            )
        else:
            output_ids = model.generate(
                inputs=input_ids,
                images=image_tensor,
                images_highres=image_highres_tensor,
                image_sizes=image_sizes,
                modalities=['image'],
                speech=speechs,
                speech_lengths=speech_lengths,
                speech_chunks=speech_chunks,
                speech_wav=speech_wavs,
                attention_mask=attention_masks,
                use_cache=True,
                stopping_criteria=[stopping_criteria],
                do_sample=True if gen_kwargs["temperature"] > 0 else False,
                temperature=gen_kwargs["temperature"],
                top_p=gen_kwargs["top_p"],
                num_beams=gen_kwargs["num_beams"],
                max_new_tokens=gen_kwargs["max_new_tokens"],
            )

    outputs = tokenizer.batch_decode(output_ids, skip_special_tokens=True)[0]
    outputs = outputs.strip()
    if outputs.endswith(stop_str):
        outputs = outputs[:-len(stop_str)]
    outputs = outputs.strip()
    return outputs, None

✨ 主要特性

• 支持多模態輸入：可以接受圖像、視頻、文本和音頻作為輸入，並輸出文本。
• 按需處理視覺輸入：提供按需解決方案，能夠無縫高效地處理任意空間大小和時間長度的視覺輸入。

📚 詳細文檔

模型架構

• 架構：預訓練的Oryx-ViT + Qwen2.5-7B
• 數據：超過500萬的圖像、視頻和音頻數據的混合，分3個階段進行訓練。
• 精度：BFloat16

硬件與軟件

• 硬件：64 * NVIDIA Tesla A100
• 編排：HuggingFace Trainer
• 代碼：Pytorch

📄 許可證

本項目採用Apache-2.0許可證。

📚 引用

@article{liu2025ola,
title={Ola: Pushing the Frontiers of Omni-Modal Language Model with Progressive Modality Alignment},
author={Liu, Zuyan and Dong, Yuhao and Wang, Jiahui and Liu, Ziwei and Hu, Winston and Lu, Jiwen and Rao, Yongming},
journal={arXiv preprint arXiv:2502.04328},
year={2025}
}