Design

Image Adaptive Threshold

Apply adaptive threshold operation that calculates threshold for small regions, suitable for varying lighting conditions

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Quick start

Call this tool from your code in three languages.

cURL

# 1) Upload each file first → returns { filePath }
curl -X POST 'https://api.elysiatools.com/upload/image-adaptive-threshold' \
  -F 'file=@/path/to/imageFile.ext'

# 2) Call the tool with the returned filePath values
curl -X POST 'https://api.elysiatools.com/en/api/tools/image-adaptive-threshold' \
  -F 'imageFile=/path/to/file.ext' \
  -F 'blockSize=11' \
  -F 'constant=2' \
  -F 'method=gaussian'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/image-adaptive-threshold

Parameters

Name	Type	Required	Description
imageFile	fileupload required	Yes	—
blockSize	number	Yes	Size of a pixel neighborhood that is used to calculate a threshold for the pixel (must be odd)
constant	number	No	Constant subtracted from the mean or weighted mean. Usually positive.
method	select	Yes	Adaptive thresholding method to use

File-type parameters must be uploaded first via POST /upload/image-adaptive-threshold, then the returned filePath is passed to the corresponding file field.

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-image-adaptive-threshold": {
      "name": "image-adaptive-threshold",
      "description": "Apply adaptive threshold operation that calculates threshold for small regions, suitable for varying lighting conditions",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=image-adaptive-threshold",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "image-adaptive-threshold",
    "arguments": {
  "imageFile": "https://example.com/file.ext",
  "blockSize": 11,
  "constant": 2,
  "method": "gaussian"
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

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