Segment Anything

Precise image segmentation with Meta's SAM on Clore.ai GPUs

Use Meta's SAM for precise image segmentation on GPU.

All examples can be run on GPU servers rented through CLORE.AI Marketplace.

Renting on CLORE.AI

1. Visit CLORE.AI Marketplace

2. Filter by GPU type, VRAM, and price

3. Choose On-Demand (fixed rate) or Spot (bid price)

4. Configure your order:

   • Select Docker image

   • Set ports (TCP for SSH, HTTP for web UIs)

   • Add environment variables if needed

   • Enter startup command

5. Select payment: CLORE, BTC, or USDT/USDC

6. Create order and wait for deployment

Access Your Server

• Find connection details in My Orders

• Web interfaces: Use the HTTP port URL

• SSH: ssh -p <port> root@<proxy-address>

What is SAM?

Segment Anything Model (SAM) can:

• Segment any object in images

• Work with prompts (points, boxes, text)

• Generate automatic masks

• Handle any image type

Model Variants

Model	VRAM	Quality	Speed
SAM-H (huge)	8GB	Best	Slow
SAM-L (large)	6GB	Great	Medium
SAM-B (base)	4GB	Good	Fast
SAM2	8GB+	Best	Medium

Quick Deploy

Docker Image:

pytorch/pytorch:2.11.0-cuda12.8-cudnn9-devel

Ports:

22/tcp
7860/http

Command:

pip install segment-anything gradio opencv-python && \
wget https://dl.fbaipublicfiles.com/segment_anything/sam_vit_h_4b8939.pth && \
python -c "
import gradio as gr
import numpy as np
from segment_anything import sam_model_registry, SamPredictor
import cv2

sam = sam_model_registry['vit_h'](checkpoint='sam_vit_h_4b8939.pth').cuda()
predictor = SamPredictor(sam)

def segment(image, evt: gr.SelectData):
    predictor.set_image(image)
    point = np.array([[evt.index[0], evt.index[1]]])
    masks, _, _ = predictor.predict(point_coords=point, point_labels=np.array([1]))
    mask = masks[0]
    colored = np.zeros_like(image)
    colored[mask] = [255, 0, 0]
    result = cv2.addWeighted(image, 0.7, colored, 0.3, 0)
    return result

demo = gr.Interface(fn=segment, inputs=gr.Image(), outputs=gr.Image(), title='Click to Segment')
demo.launch(server_name='0.0.0.0', server_port=7860)
"

Accessing Your Service

After deployment, find your http_pub URL in My Orders:

1. Go to My Orders page

2. Click on your order

3. Find the http_pub URL (e.g., abc123.clorecloud.net)

Use https://YOUR_HTTP_PUB_URL instead of localhost in examples below.

Installation

pip install segment-anything opencv-python

Download Models

# SAM-H (best quality)
wget https://dl.fbaipublicfiles.com/segment_anything/sam_vit_h_4b8939.pth

# SAM-L (balanced)
wget https://dl.fbaipublicfiles.com/segment_anything/sam_vit_l_0b3195.pth

# SAM-B (fast)
wget https://dl.fbaipublicfiles.com/segment_anything/sam_vit_b_01ec64.pth

Python API

Basic Segmentation with Points

from segment_anything import sam_model_registry, SamPredictor
import cv2
import numpy as np

# Load model
sam = sam_model_registry["vit_h"](checkpoint="sam_vit_h_4b8939.pth")
sam.to("cuda")

predictor = SamPredictor(sam)

# Load image
image = cv2.imread("photo.jpg")
image_rgb = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)

# Set image
predictor.set_image(image_rgb)

# Segment with point prompt
input_point = np.array([[500, 375]])  # x, y coordinates
input_label = np.array([1])  # 1 = foreground, 0 = background

masks, scores, logits = predictor.predict(
    point_coords=input_point,
    point_labels=input_label,
    multimask_output=True
)

# Get best mask
best_mask = masks[np.argmax(scores)]

# Save mask
cv2.imwrite("mask.png", best_mask.astype(np.uint8) * 255)

Box Prompt

# Segment with bounding box
input_box = np.array([100, 100, 400, 400])  # x1, y1, x2, y2

masks, scores, _ = predictor.predict(
    box=input_box,
    multimask_output=False
)

Multiple Points

# Multiple foreground/background points
input_points = np.array([
    [500, 375],   # Point 1
    [550, 400],   # Point 2
    [100, 100],   # Background point
])
input_labels = np.array([1, 1, 0])  # 1=foreground, 0=background

masks, scores, _ = predictor.predict(
    point_coords=input_points,
    point_labels=input_labels,
    multimask_output=True
)

Combined Box + Point

masks, scores, _ = predictor.predict(
    point_coords=input_point,
    point_labels=input_label,
    box=input_box,
    multimask_output=False
)

Automatic Mask Generation

Generate all possible masks:

from segment_anything import SamAutomaticMaskGenerator
import cv2

sam = sam_model_registry["vit_h"](checkpoint="sam_vit_h_4b8939.pth")
sam.to("cuda")

mask_generator = SamAutomaticMaskGenerator(
    model=sam,
    points_per_side=32,
    pred_iou_thresh=0.86,
    stability_score_thresh=0.92,
    crop_n_layers=1,
    crop_n_points_downscale_factor=2,
    min_mask_region_area=100
)

image = cv2.imread("photo.jpg")
image_rgb = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)

masks = mask_generator.generate(image_rgb)

# Each mask contains:

# - 'segmentation': binary mask

# - 'area': mask area in pixels

# - 'bbox': bounding box

# - 'predicted_iou': quality score

# - 'stability_score': stability score

print(f"Found {len(masks)} masks")

Visualize All Masks

import matplotlib.pyplot as plt

def show_masks(image, masks):
    plt.figure(figsize=(20, 20))
    plt.imshow(image)

    sorted_masks = sorted(masks, key=lambda x: x['area'], reverse=True)

    for mask in sorted_masks:
        m = mask['segmentation']
        color = np.random.random(3)
        colored = np.zeros((*m.shape, 4))
        colored[m] = [*color, 0.5]
        plt.imshow(colored)

    plt.axis('off')
    plt.savefig('all_masks.png')

show_masks(image_rgb, masks)

SAM 2 (Latest Version)

pip install sam2

from sam2.sam2_image_predictor import SAM2ImagePredictor

predictor = SAM2ImagePredictor.from_pretrained("facebook/sam2-hiera-large")

with torch.inference_mode():
    predictor.set_image(image)
    masks, scores, _ = predictor.predict(
        point_coords=points,
        point_labels=labels
    )

Remove Background

from segment_anything import sam_model_registry, SamPredictor
import cv2
import numpy as np

sam = sam_model_registry["vit_h"](checkpoint="sam_vit_h_4b8939.pth")
sam.to("cuda")
predictor = SamPredictor(sam)

def remove_background(image_path, point):
    image = cv2.imread(image_path)
    image_rgb = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)

    predictor.set_image(image_rgb)

    masks, scores, _ = predictor.predict(
        point_coords=np.array([point]),
        point_labels=np.array([1]),
        multimask_output=True
    )

    best_mask = masks[np.argmax(scores)]

    # Create RGBA image
    result = cv2.cvtColor(image, cv2.COLOR_BGR2BGRA)
    result[:, :, 3] = best_mask.astype(np.uint8) * 255

    return result

# Click on object to keep
result = remove_background("photo.jpg", [400, 300])
cv2.imwrite("no_background.png", result)

Extract Object

def extract_object(image_path, point):
    image = cv2.imread(image_path)
    image_rgb = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)

    predictor.set_image(image_rgb)

    masks, scores, _ = predictor.predict(
        point_coords=np.array([point]),
        point_labels=np.array([1]),
        multimask_output=True
    )

    best_mask = masks[np.argmax(scores)]

    # Get bounding box
    rows = np.any(best_mask, axis=1)
    cols = np.any(best_mask, axis=0)
    y1, y2 = np.where(rows)[0][[0, -1]]
    x1, x2 = np.where(cols)[0][[0, -1]]

    # Crop
    cropped = image[y1:y2+1, x1:x2+1]
    mask_cropped = best_mask[y1:y2+1, x1:x2+1]

    # Apply mask
    result = cv2.cvtColor(cropped, cv2.COLOR_BGR2BGRA)
    result[:, :, 3] = mask_cropped.astype(np.uint8) * 255

    return result

Batch Processing

import os
from segment_anything import sam_model_registry, SamAutomaticMaskGenerator
import cv2
import json

sam = sam_model_registry["vit_h"](checkpoint="sam_vit_h_4b8939.pth")
sam.to("cuda")

mask_generator = SamAutomaticMaskGenerator(sam)

input_dir = "./images"
output_dir = "./segmented"
os.makedirs(output_dir, exist_ok=True)

for filename in os.listdir(input_dir):
    if filename.lower().endswith(('.png', '.jpg', '.jpeg')):
        image = cv2.imread(os.path.join(input_dir, filename))
        image_rgb = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)

        masks = mask_generator.generate(image_rgb)

        # Save masks as JSON
        mask_data = []
        for i, mask in enumerate(masks):
            mask_data.append({
                'id': i,
                'area': int(mask['area']),
                'bbox': mask['bbox'],
                'score': float(mask['predicted_iou'])
            })

            # Save individual mask
            cv2.imwrite(
                os.path.join(output_dir, f"{filename}_mask_{i}.png"),
                mask['segmentation'].astype(np.uint8) * 255
            )

        with open(os.path.join(output_dir, f"{filename}_masks.json"), 'w') as f:
            json.dump(mask_data, f)

API Server

from fastapi import FastAPI, UploadFile
from fastapi.responses import Response
from segment_anything import sam_model_registry, SamPredictor
import cv2
import numpy as np
import json

app = FastAPI()

sam = sam_model_registry["vit_h"](checkpoint="sam_vit_h_4b8939.pth")
sam.to("cuda")
predictor = SamPredictor(sam)

@app.post("/segment")
async def segment(file: UploadFile, x: int, y: int):
    contents = await file.read()
    nparr = np.frombuffer(contents, np.uint8)
    image = cv2.imdecode(nparr, cv2.IMREAD_COLOR)
    image_rgb = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)

    predictor.set_image(image_rgb)

    masks, scores, _ = predictor.predict(
        point_coords=np.array([[x, y]]),
        point_labels=np.array([1]),
        multimask_output=True
    )

    best_mask = masks[np.argmax(scores)]

    _, encoded = cv2.imencode('.png', best_mask.astype(np.uint8) * 255)
    return Response(content=encoded.tobytes(), media_type="image/png")

Integration with Stable Diffusion

Use SAM masks for inpainting:

# Generate mask with SAM
predictor.set_image(image)
masks, scores, _ = predictor.predict(point_coords=point, point_labels=label)
mask = masks[np.argmax(scores)]

# Use in SD inpainting
from diffusers import StableDiffusionInpaintPipeline

pipe = StableDiffusionInpaintPipeline.from_pretrained("runwayml/stable-diffusion-inpainting")
pipe.to("cuda")

result = pipe(
    prompt="a red sports car",
    image=image,
    mask_image=mask
).images[0]

Performance

Model	Image Size	GPU	Time
SAM-H	1024x1024	RTX 3090	~0.5s
SAM-L	1024x1024	RTX 3090	~0.3s
SAM-B	1024x1024	RTX 3090	~0.2s
SAM2	1024x1024	RTX 4090	~0.3s

Memory Optimization

# For limited VRAM
sam = sam_model_registry["vit_b"](checkpoint="sam_vit_b_01ec64.pth")  # Use smaller model

# Or reduce automatic generation points
mask_generator = SamAutomaticMaskGenerator(
    model=sam,
    points_per_side=16,  # Reduce from 32
)

Troubleshooting

CUDA Out of Memory

• Use SAM-B instead of SAM-H

• Reduce image size before processing

• Clear cache: torch.cuda.empty_cache()

Poor Segmentation

• Add more points (foreground + background)

• Use box prompt for better guidance

• Try multimask_output=True and pick best

Cost Estimate

Typical CLORE.AI marketplace rates (as of 2024):

GPU	Hourly Rate	Daily Rate	4-Hour Session
RTX 3060	~$0.03	~$0.70	~$0.12
RTX 3090	~$0.06	~$1.50	~$0.25
RTX 4090	~$0.10	~$2.30	~$0.40
A100 40GB	~$0.17	~$4.00	~$0.70
A100 80GB	~$0.25	~$6.00	~$1.00

Prices vary by provider and demand. Check CLORE.AI Marketplace for current rates.

Save money:

• Use the Spot market for interruptible work — about a third of servers price spot below on-demand (median ~13% off), the rest match it

• Pay with CLORE tokens

• Compare prices across different providers

Next Steps

• Stable Diffusion Inpainting

• ControlNet Guide

• Real-ESRGAN Upscaling