Design

Image Morphological Closing

Apply morphological closing operation (dilation followed by erosion) to fill small holes and connect nearby objects

file· File resultOpen tool

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-close' \
  -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-close' \
  -F 'imageFile=/path/to/file.ext' \
  -F 'iterations=1' \
  -F 'kernelType=default'

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-close

Parameters

Name	Type	Required	Description
imageFile	fileupload required	Yes	Best results with binary (black and white) images or images with holes to fill
iterations	number	No	Number of closing operations to apply. More iterations = stronger hole filling
kernelType	select	No	Size of the morphological kernel to use

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

Response format

File result

JSON

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

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-close": {
      "name": "image-close",
      "description": "Apply morphological closing operation (dilation followed by erosion) to fill small holes and connect nearby objects",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=image-close",
      "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-close",
    "arguments": {
  "imageFile": "https://example.com/file.ext",
  "iterations": 1,
  "kernelType": "default"
}
  }
}

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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