rgb2hsv — Convert RGB image or colormap values to HSV using MATLAB-compatible channel mapping.
rgb2hsv(RGB) converts MxNx3 image data or an Nx3 colormap from RGB to HSV. It follows MATLAB-compatible conventions for hue, saturation, and value channel construction across supported numeric input classes.
Syntax
HSV = rgb2hsv(RGB)Inputs
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
RGB | Any | Yes | — | RGB image or Nx3 RGB colormap values. |
Returns
| Name | Type | Description |
|---|---|---|
HSV | NumericArray | HSV image or colormap converted from RGB input. |
Errors
| Identifier | When | Message |
|---|---|---|
RunMat:rgb2hsv:TooManyInputs | More than one input argument is supplied. | rgb2hsv: too many input arguments |
RunMat:rgb2hsv:InvalidInput | Input cannot be interpreted as an MxNx3 RGB image or Nx3 RGB colormap. | rgb2hsv: invalid input |
RunMat:rgb2hsv:Internal | HSV output tensor construction fails internally. | rgb2hsv: internal conversion failure |
How rgb2hsv works
- Accepts MxNx3 truecolor images and Nx3 colormaps.
- Integer RGB inputs are scaled into [0,1] before conversion.
Example
RGB To HSV
HSV = rgb2hsv(RGB);Expected output:
% HSV has the same shape as RGBUsing rgb2hsv with coding agents
Open a RunMat example with live inputs, then ask the agent to explain how rgb2hsv changes the result.
Run a small rgb2hsv example, explain the result, then change one input and compare the output.
Related Image functions
Open-source implementation
Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how rgb2hsv is executed, line by line, in Rust.
- View the source for rgb2hsv in Rust on GitHub
- Learn how the RunMat runtime works
- Found a bug? Open an issue with a minimal reproduction.
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