Gradio updates

Author: Vikram Voleti

scripts/demo/sv3d_helpers.py

@@ -2,6 +2,7 @@
 
 import matplotlib.pyplot as plt
 import numpy as np
+from PIL import Image
 
 
 def generate_dynamic_cycle_xy_values(
@@ -74,8 +75,9 @@ def gen_dynamic_loop(length=21, elev_deg=0):
     return np.roll(azim_rad, -1), np.roll(elev_rad, -1)
 
 
-def plot_3D(azim, polar, save_path, dynamic=True):
-    os.makedirs(os.path.dirname(save_path), exist_ok=True)
+def plot_3D(azim, polar, save_path=None, dynamic=True):
+    if save_path is not None:
+        os.makedirs(os.path.dirname(save_path), exist_ok=True)
     elev = np.deg2rad(90) - polar
     fig = plt.figure(figsize=(5, 5))
     ax = fig.add_subplot(projection="3d")
@@ -98,7 +100,20 @@ def plot_3D(azim, polar, save_path, dynamic=True):
         ax.scatter(xs[i + 1], ys[i + 1], zs[i + 1], s=100, color=col[i + 1])
     ax.scatter(xs[:1], ys[:1], zs[:1], s=120, facecolors="none", edgecolors="k")
     ax.scatter(xs[-1:], ys[-1:], zs[-1:], s=120, facecolors="none", edgecolors="k")
-    ax.view_init(elev=30, azim=-20, roll=0)
-    plt.savefig(save_path, bbox_inches="tight")
+    ax.view_init(elev=40, azim=-20, roll=0)
+    ax.xaxis.set_ticklabels([])
+    ax.yaxis.set_ticklabels([])
+    ax.zaxis.set_ticklabels([])
+    if save_path is None:
+        fig.canvas.draw()
+        lst = list(fig.canvas.get_width_height())
+        lst.append(3)
+        image = Image.fromarray(
+            np.frombuffer(fig.canvas.tostring_rgb(), dtype=np.uint8).reshape(lst)
+        )
+    else:
+        plt.savefig(save_path, bbox_inches="tight")
     plt.clf()
     plt.close()
+    if save_path is None:
+        return image

scripts/demo/sv3d_p_gradio.py

@@ -0,0 +1,341 @@
+# Adding this at the very top of app.py to make 'generative-models' directory discoverable
+import os
+import sys
+
+sys.path.append(os.path.dirname(__file__))
+
+import random
+from glob import glob
+from pathlib import Path
+from typing import List, Optional
+
+import cv2
+import gradio as gr
+import imageio
+import numpy as np
+import torch
+from einops import rearrange, repeat
+from huggingface_hub import hf_hub_download
+from PIL import Image
+from rembg import remove
+from scripts.demo.sv3d_helpers import gen_dynamic_loop, plot_3D
+from scripts.sampling.simple_video_sample import (
+    get_batch,
+    get_unique_embedder_keys_from_conditioner,
+    load_model,
+)
+from sgm.inference.helpers import embed_watermark
+from torchvision.transforms import ToTensor
+
+version = "sv3d_p"  # replace with 'sv3d_p' or 'sv3d_u' for other models
+
+# Define the repo, local directory and filename
+repo_id = "stabilityai/sv3d"
+filename = f"{version}.safetensors"  # replace with "sv3d_u.safetensors" or "sv3d_p.safetensors"
+local_dir = "checkpoints"
+local_ckpt_path = os.path.join(local_dir, filename)
+
+# Check if the file already exists
+if not os.path.exists(local_ckpt_path):
+    # If the file doesn't exist, download it
+    hf_hub_download(repo_id=repo_id, filename=filename, local_dir=local_dir)
+    print("File downloaded.")
+else:
+    print("File already exists. No need to download.")
+
+device = "cuda"
+max_64_bit_int = 2**63 - 1
+
+num_frames = 21
+num_steps = 50
+model_config = f"scripts/sampling/configs/{version}.yaml"
+
+model, filter = load_model(
+    model_config,
+    device,
+    num_frames,
+    num_steps,
+)
+
+
+def gen_orbit(orbit, elev_deg):
+    global polars_rad
+    global azimuths_rad
+    if orbit == "dynamic":
+        azim_rad, elev_rad = gen_dynamic_loop(length=num_frames, elev_deg=elev_deg)
+        polars_rad = np.deg2rad(90) - elev_rad
+        azimuths_rad = azim_rad
+    else:
+        polars_rad = np.array([np.deg2rad(90 - elev_deg)] * num_frames)
+        azimuths_rad = np.linspace(0, 2 * np.pi, num_frames + 1)[1:]
+
+    plot = plot_3D(
+        azim=azimuths_rad,
+        polar=polars_rad,
+        save_path=None,
+        dynamic=(orbit == "dynamic"),
+    )
+    return plot
+
+
+def sample(
+    input_path: str = "assets/test_image.png",  # Can either be image file or folder with image files
+    seed: Optional[int] = None,
+    randomize_seed: bool = True,
+    orbit: str = "same elevation",
+    elev_deg: float = 10.0,
+    decoding_t: int = 7,  # Number of frames decoded at a time! This eats most VRAM. Reduce if necessary.
+    device: str = "cuda",
+    output_folder: str = None,
+    image_frame_ratio: Optional[float] = None,
+):
+    """
+    Simple script to generate a single sample conditioned on an image `input_path` or multiple images, one for each
+    image file in folder `input_path`. If you run out of VRAM, try decreasing `decoding_t`.
+    """
+    if randomize_seed:
+        seed = random.randint(0, max_64_bit_int)
+
+    torch.manual_seed(seed)
+
+    path = Path(input_path)
+    all_img_paths = []
+    if path.is_file():
+        if any([input_path.endswith(x) for x in ["jpg", "jpeg", "png"]]):
+            all_img_paths = [input_path]
+        else:
+            raise ValueError("Path is not valid image file.")
+    elif path.is_dir():
+        all_img_paths = sorted(
+            [
+                f
+                for f in path.iterdir()
+                if f.is_file() and f.suffix.lower() in [".jpg", ".jpeg", ".png"]
+            ]
+        )
+        if len(all_img_paths) == 0:
+            raise ValueError("Folder does not contain any images.")
+    else:
+        raise ValueError
+
+    for input_img_path in all_img_paths:
+
+        image = Image.open(input_img_path)
+        if image.mode == "RGBA":
+            pass
+        else:
+            # remove bg
+            image.thumbnail([768, 768], Image.Resampling.LANCZOS)
+            image = remove(image.convert("RGBA"), alpha_matting=True)
+
+        # resize object in frame
+        image_arr = np.array(image)
+        in_w, in_h = image_arr.shape[:2]
+        ret, mask = cv2.threshold(
+            np.array(image.split()[-1]), 0, 255, cv2.THRESH_BINARY
+        )
+        x, y, w, h = cv2.boundingRect(mask)
+        max_size = max(w, h)
+        side_len = (
+            int(max_size / image_frame_ratio) if image_frame_ratio is not None else in_w
+        )
+        padded_image = np.zeros((side_len, side_len, 4), dtype=np.uint8)
+        center = side_len // 2
+        padded_image[
+            center - h // 2 : center - h // 2 + h,
+            center - w // 2 : center - w // 2 + w,
+        ] = image_arr[y : y + h, x : x + w]
+        # resize frame to 576x576
+        rgba = Image.fromarray(padded_image).resize((576, 576), Image.LANCZOS)
+        # white bg
+        rgba_arr = np.array(rgba) / 255.0
+        rgb = rgba_arr[..., :3] * rgba_arr[..., -1:] + (1 - rgba_arr[..., -1:])
+        input_image = Image.fromarray((rgb * 255).astype(np.uint8))
+
+        image = ToTensor()(input_image)
+        image = image * 2.0 - 1.0
+
+        image = image.unsqueeze(0).to(device)
+        H, W = image.shape[2:]
+        assert image.shape[1] == 3
+        F = 8
+        C = 4
+        shape = (num_frames, C, H // F, W // F)
+        if (H, W) != (576, 576) and "sv3d" in version:
+            print(
+                "WARNING: The conditioning frame you provided is not 576x576. This leads to suboptimal performance as model was only trained on 576x576."
+            )
+
+        cond_aug = 1e-5
+
+        value_dict = {}
+        value_dict["cond_aug"] = cond_aug
+        value_dict["cond_frames_without_noise"] = image
+        value_dict["cond_frames"] = image + cond_aug * torch.randn_like(image)
+        value_dict["cond_aug"] = cond_aug
+
+        value_dict["polars_rad"] = polars_rad
+        value_dict["azimuths_rad"] = azimuths_rad
+
+        output_folder = output_folder or f"outputs/gradio/{version}"
+        cond_aug = 1e-5
+
+        with torch.no_grad():
+            with torch.autocast(device):
+                batch, batch_uc = get_batch(
+                    get_unique_embedder_keys_from_conditioner(model.conditioner),
+                    value_dict,
+                    [1, num_frames],
+                    T=num_frames,
+                    device=device,
+                )
+                c, uc = model.conditioner.get_unconditional_conditioning(
+                    batch,
+                    batch_uc=batch_uc,
+                    force_uc_zero_embeddings=[
+                        "cond_frames",
+                        "cond_frames_without_noise",
+                    ],
+                )
+
+                for k in ["crossattn", "concat"]:
+                    uc[k] = repeat(uc[k], "b ... -> b t ...", t=num_frames)
+                    uc[k] = rearrange(uc[k], "b t ... -> (b t) ...", t=num_frames)
+                    c[k] = repeat(c[k], "b ... -> b t ...", t=num_frames)
+                    c[k] = rearrange(c[k], "b t ... -> (b t) ...", t=num_frames)
+
+                randn = torch.randn(shape, device=device)
+
+                additional_model_inputs = {}
+                additional_model_inputs["image_only_indicator"] = torch.zeros(
+                    2, num_frames
+                ).to(device)
+                additional_model_inputs["num_video_frames"] = batch["num_video_frames"]
+
+                def denoiser(input, sigma, c):
+                    return model.denoiser(
+                        model.model, input, sigma, c, **additional_model_inputs
+                    )
+
+                samples_z = model.sampler(denoiser, randn, cond=c, uc=uc)
+                model.en_and_decode_n_samples_a_time = decoding_t
+                samples_x = model.decode_first_stage(samples_z)
+                samples_x[-1:] = value_dict["cond_frames_without_noise"]
+                samples = torch.clamp((samples_x + 1.0) / 2.0, min=0.0, max=1.0)
+
+                os.makedirs(output_folder, exist_ok=True)
+                base_count = len(glob(os.path.join(output_folder, "*.mp4")))
+
+                imageio.imwrite(
+                    os.path.join(output_folder, f"{base_count:06d}.jpg"), input_image
+                )
+
+                samples = embed_watermark(samples)
+                samples = filter(samples)
+                vid = (
+                    (rearrange(samples, "t c h w -> t h w c") * 255)
+                    .cpu()
+                    .numpy()
+                    .astype(np.uint8)
+                )
+                video_path = os.path.join(output_folder, f"{base_count:06d}.mp4")
+                imageio.mimwrite(video_path, vid)
+
+        return video_path, seed
+
+
+def resize_image(image_path, output_size=(576, 576)):
+    image = Image.open(image_path)
+    # Calculate aspect ratios
+    target_aspect = output_size[0] / output_size[1]  # Aspect ratio of the desired size
+    image_aspect = image.width / image.height  # Aspect ratio of the original image
+
+    # Resize then crop if the original image is larger
+    if image_aspect > target_aspect:
+        # Resize the image to match the target height, maintaining aspect ratio
+        new_height = output_size[1]
+        new_width = int(new_height * image_aspect)
+        resized_image = image.resize((new_width, new_height), Image.LANCZOS)
+        # Calculate coordinates for cropping
+        left = (new_width - output_size[0]) / 2
+        top = 0
+        right = (new_width + output_size[0]) / 2
+        bottom = output_size[1]
+    else:
+        # Resize the image to match the target width, maintaining aspect ratio
+        new_width = output_size[0]
+        new_height = int(new_width / image_aspect)
+        resized_image = image.resize((new_width, new_height), Image.LANCZOS)
+        # Calculate coordinates for cropping
+        left = 0
+        top = (new_height - output_size[1]) / 2
+        right = output_size[0]
+        bottom = (new_height + output_size[1]) / 2
+
+    # Crop the image
+    cropped_image = resized_image.crop((left, top, right, bottom))
+
+    return cropped_image
+
+
+with gr.Blocks() as demo:
+    gr.Markdown(
+        """# Demo for SV3D_p from Stability AI ([model](https://huggingface.co/stabilityai/sv3d), [news](https://stability.ai/news/introducing-stable-video-3d))
+#### Research release ([_non-commercial_](https://huggingface.co/stabilityai/sv3d/blob/main/LICENSE)): generate 21 frames orbital video from a single image, at variable elevation and azimuth.
+Generation takes ~40s (for 50 steps) in an A100.
+  """
+    )
+    with gr.Row():
+        with gr.Column():
+            image = gr.Image(label="Upload your image", type="filepath")
+            generate_btn = gr.Button("Generate")
+        video = gr.Video()
+    with gr.Row():
+        with gr.Column():
+            elev_deg = gr.Slider(
+                label="Elevation (in degrees)",
+                info="Elevation of the camera in the conditioning image, in degrees.",
+                value=10.0,
+                minimum=-10,
+                maximum=30,
+            )
+            orbit = gr.Dropdown(
+                ["same elevation", "dynamic"],
+                label="Orbit",
+                info="Choose with orbit to generate",
+            )
+        plot_image = gr.Image()
+    with gr.Accordion("Advanced options", open=False):
+        seed = gr.Slider(
+            label="Seed",
+            value=23,
+            randomize=True,
+            minimum=0,
+            maximum=max_64_bit_int,
+            step=1,
+        )
+        randomize_seed = gr.Checkbox(label="Randomize seed", value=True)
+        decoding_t = gr.Slider(
+            label="Decode n frames at a time",
+            info="Number of frames decoded at a time! This eats most VRAM. Reduce if necessary.",
+            value=7,
+            minimum=1,
+            maximum=14,
+        )
+
+    image.upload(fn=resize_image, inputs=image, outputs=image, queue=False)
+
+    elev_deg.change(gen_orbit, [orbit, elev_deg], plot_image)
+    orbit.change(gen_orbit, [orbit, elev_deg], plot_image)
+    # seed.change(gen_orbit, [orbit, elev_deg], plot_image)
+
+    generate_btn.click(
+        fn=sample,
+        inputs=[image, seed, randomize_seed, decoding_t],
+        outputs=[video, seed],
+        api_name="video",
+    )
+
+if __name__ == "__main__":
+    demo.queue(max_size=20)
+    demo.launch(share=True)