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Builtin Reference
    • gray2rgb
    • hsv2rgb
    • im2double
    • im2uint16
    • im2uint8
    • ind2rgb
    • lab2rgb
    • rgb2gray
    • rgb2hsv
    • rgb2lab

im2uint16 — Convert images to uint16 in MATLAB and RunMat.

im2uint16(I) converts image data to uint16 using MATLAB image-scaling rules. Floating data in [0, 1] maps to [0, 65535].

Syntax

J = im2uint16(I)
J = im2uint16(I, "indexed")

Inputs

NameTypeRequiredDefaultDescription
IAnyYes—Image data to convert.
IAnyYes—Indexed image data to convert.
indexedStringScalarYes—The literal "indexed", selecting indexed-image offset semantics.

Returns

NameTypeDescription
JNumericArrayConverted image data in uint16 class.

Errors

IdentifierWhenMessage
RunMat:im2uint16:TooManyInputsMore than two input arguments are supplied.im2uint16: too many input arguments
RunMat:im2uint16:InvalidInputInput cannot be gathered or interpreted for image conversion.im2uint16: invalid input
RunMat:im2uint16:UnsupportedInputTypeInput type is outside supported numeric/logical image classes.im2uint16: unsupported input type
RunMat:im2uint16:InternalInternal conversion step fails while building output tensor.im2uint16: internal conversion failure

How im2uint16 works

  • Floating-point inputs are clamped to [0,1], multiplied by 65535, and rounded.
  • uint8 inputs are expanded into the uint16 image range.

Example

Convert To uint16

J = im2uint16(I);

Expected output:

% J is uint16 image data

Using im2uint16 with coding agents

Open a RunMat example with live inputs, then ask the agent to explain how im2uint16 changes the result.

Run a small im2uint16 example, explain the result, then change one input and compare the output.

Related Image functions

Color

gray2rgb · hsv2rgb · im2double · im2uint8 · ind2rgb · lab2rgb · rgb2gray · rgb2hsv · rgb2lab

Filters

filter2 · fspecial · imfilter

Image

imfinfo · imhist

Io

imread · imwrite

Open-source implementation

Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how im2uint16 is executed, line by line, in Rust.

  • View the source for im2uint16 in Rust on GitHub
  • Learn how the RunMat runtime works
  • Found a bug? Open an issue with a minimal reproduction.

About RunMat

RunMat is an open-source runtime that executes MATLAB-syntax code blazing on any GPU. It is licensed under the Apache 2.0 license.

  • RunMat automatically optimizes your math for GPU execution on Apple, Nvidia, and AMD hardware. No code changes needed. Simulations that took hours now take minutes.
  • Start running code in seconds. RunMat runs in the browser, on the desktop, or from the CLI. No license server, no IT ticket.

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On this page
  • Syntax
  • Inputs
  • Returns
  • Errors
  • How im2uint16 works
  • Example
  • Convert To uint16
  • Using im2uint16 with coding agents
  • Related Image functions
  • Color
  • Filters
  • Image
  • Io
  • Open-source implementation
  • About RunMat