POST http://localhost:8088/generate_mosaic HTTP/1.1
Content-Type: application/json

{
  "rows": 1,
  "columns": 1,
  "buffer_size": 150,
  "background_file": "fonds_slide.png",
  "keywords": ["unicorn"]
}

################################

POST http://localhost:8088/generate_mosaic HTTP/1.1
Content-Type: application/json

{
  "rows": 1,
  "columns": 2,
  "buffer_size": 150,
  "background_file": "fonds_slide.png",
  "keywords": ["unicorn","thief"]
}

################################

POST http://localhost:8088/generate_mosaic HTTP/1.1
Content-Type: application/json

{
  "rows": 2,
  "columns": 2,
  "buffer_size": 150,
  "background_file": "fonds_slide.png",
  "keywords": ["thief","unicorn","unicorn","thief"]
}


################################

POST http://localhost:8088/generate_mosaic HTTP/1.1
Content-Type: application/json

{
  "rows": 10,
  "columns": 10,
  "buffer_size": 100,
  "keywords": ["cat", "dog"],
  "background_file": "fonds_slide.png"
}