Upscaling Models

Overview

The DataCrunch Inference Service offers a powerful solution for image upscaling that employs advanced deep learning techniques to enhance image resolution. This documentation aims to provide a comprehensive guide for effectively utilizing this service.

Available Models

• realesrgan: The Real-ESRGAN model is designed for image upscaling and enhancement. It uses Enhanced Super-Resolution Generative Adversarial Networks (ESRGAN) to upscale images, significantly improving their resolution and detail. This model is particularly adept at restoring finer details in images, making it ideal for enhancing low-resolution photos or graphics.

• gfpgan: GFP-GAN, or Generative Facial Prior GAN, specializes in restoring and enhancing facial details in images. Leveraging advanced Generative Adversarial Networks, this model excels at correcting facial imperfections, enhancing facial features, and improving overall image quality. It is particularly useful for portrait photos where facial details are a key focus.

Examples of API Usage

To use the Upscaling Inference Service API, replace <MODEL> in the URL with realesrgan or gfpgan.

For example, use https://inference.datacrunch.io/v1/images/realesrgan/generate.

Upscale an Image

To upscale an image to twice its resolution use the following request:

cURL

curl -X POST https://inference.datacrunch.io/v1/images/<MODEL>/generate \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer <your_api_key>" \
  -d \
'{
    "input_image": "<base64_encoded_image>"
}'

Python

import requests

url = "https://inference.datacrunch.io/v1/images/<MODEL>/generate"
headers = {
    "Content-Type": "application/json",
    "Authorization": "Bearer <your_api_key>"
}
data = {"input_image": "<base64_encoded_image>"}

response = requests.post(url, headers=headers, json=data)
print(response.json())

JavaScript

const axios = require('axios');

const url = "https://inference.datacrunch.io/v1/images/<MODEL>/generate";
const headers = {
  'Content-Type': 'application/json',
  'Authorization': 'Bearer <your_api_key>'
};
const data = {"input_image": "<base64_encoded_image>"};

axios.post(url, data, { headers: headers })
  .then((response) => {
    console.log(response.data);
  })
  .catch((error) => {
    console.error('Error:', error);
  });

API Specification

Real-ESRGAN Upscaling

Upscale image to 2x or 4x

POSThttps://inference.datacrunch.io/v1/images/realesrgan/generate

Body

application/json

input_imageInput Image

Base64 encoded string of the input image to be upscaled.

scaleScale

Scale factor either 2 or 4.

Response

200422500

Successful Response

Body

application/json

error*Whether there is error

error_messageError message

results*RealESRGANResult

Result of upscaling.

Request

JavaScriptCurl

const response = await fetch('https://inference.datacrunch.io/v1/images/realesrgan/generate', {
    method: 'POST',
    headers: {
      "Content-Type": "application/json"
    },
    body: JSON.stringify({}),
});
const data = await response.json();

Response

{
  "error": false,
  "error_message": "text",
  "results": {
    "output_image": "text",
    "elapsed_time": 0.123
  }
}

API Parameters

• input_image (string, required): Base64 encoded string of the input image to be upscaled.