False-color mapping (cv::applyColorMap). Grayscale/depth/confidence maps get colored by the colormap enum, outputting a 3-channel visualization.

Module：OpenCV color & threshold · Task type：opencv_apply_color_map

Ports

Inputs

PortTypeRequired
inImage / cv::Mat✓

Outputs

PortTypeRequired
outcv::Mat✓

Parameters

参数类型默认值范围 / 选项说明
colormapenum217 options (see list below)

colormap Options（17）：

  • AUTUMN
  • BONE
  • JET
  • WINTER
  • RAINBOW
  • OCEAN
  • HOT
  • HSV
  • PINK
  • PARULA
  • MAGMA
  • INFERNO
  • PLASMA
  • VIRIDIS
  • CIVIDIS
  • TWILIGHT
  • TURBO

Example graph

A minimal runnable pipeline (read → process → write). Drag it into GraphStudio or open via --open; replace data/test.png with a real path.

{
  "version": "2.0",
  "tasks": [
    {
      "id": "read",
      "type": "opencv_image_read",
      "params": {
        "file_path": "data/test.png"
      }
    },
    {
      "id": "node",
      "type": "opencv_apply_color_map",
      "params": {
        "colormap": 2
      }
    },
    {
      "id": "save",
      "type": "opencv_image_write",
      "params": {
        "file_path": "out_out.png"
      }
    }
  ],
  "edges": [
    {
      "from": "read",
      "from_port": "out",
      "to": "node",
      "to_port": "in"
    },
    {
      "from": "node",
      "from_port": "out",
      "to": "save",
      "to_port": "in"
    }
  ]
}

Part of the GraphStudio node guide series; parameters reflect the latest release.