utils/image

Helper module for image processing.

These functions and classes are only used internally, meaning an end-user shouldn’t need to access anything here.

• utils/image
  • .RawImage
    • new RawImage(data, width, height, channels)
    • instance
      • ._CONTENT_TYPE_MAP
      • .grayscale() ⇒ RawImage
      • .rgb() ⇒ RawImage
      • .rgba() ⇒ RawImage
      • .resize(width, height, options) ⇒ Promise.<RawImage>
      • ._update(data, width, height, channels)
      • .clone() ⇒ RawImage
      • .convert(numChannels) ⇒ RawImage
      • .save(path)
    • static
      • .read(input) ⇒ *
      • .fromURL(url) ⇒ Promise.<RawImage>
      • .fromBlob(blob) ⇒ Promise.<RawImage>

utils/image.RawImage

Kind: static class of utils/image

• .RawImage
  • new RawImage(data, width, height, channels)
  • instance
    • ._CONTENT_TYPE_MAP
    • .grayscale() ⇒ RawImage
    • .rgb() ⇒ RawImage
    • .rgba() ⇒ RawImage
    • .resize(width, height, options) ⇒ Promise.<RawImage>
    • ._update(data, width, height, channels)
    • .clone() ⇒ RawImage
    • .convert(numChannels) ⇒ RawImage
    • .save(path)
  • static
    • .read(input) ⇒ *
    • .fromURL(url) ⇒ Promise.<RawImage>
    • .fromBlob(blob) ⇒ Promise.<RawImage>

new RawImage(data, width, height, channels)

Create a new RawImage object.

rawImage._CONTENT_TYPE_MAP

Mapping from file extensions to MIME types.

Kind: instance property of RawImage

rawImage.grayscale() ⇒ RawImage

Convert the image to grayscale format.

Kind: instance method of RawImage
Returns: RawImage - this to support chaining.

rawImage.rgb() ⇒ RawImage

Convert the image to RGB format.

Kind: instance method of RawImage
Returns: RawImage - this to support chaining.

rawImage.rgba() ⇒ RawImage

Convert the image to RGBA format.

Kind: instance method of RawImage
Returns: RawImage - this to support chaining.

rawImage.resize(width, height, options) ⇒ Promise.<RawImage>

Resize the image to the given dimensions. This method uses the canvas API to perform the resizing.

Kind: instance method of RawImage
Returns: Promise.<RawImage> - this to support chaining.

rawImage._update(data, width, height, channels)

Helper method to update the image data.

Kind: instance method of RawImage

rawImage.clone() ⇒ RawImage

Clone the image

Kind: instance method of RawImage
Returns: RawImage - The cloned image

rawImage.convert(numChannels) ⇒ RawImage

Helper method for converting image to have a certain number of channels

Kind: instance method of RawImage
Returns: RawImage - this to support chaining.

rawImage.save(path)

Save the image to the given path.

Kind: instance method of RawImage

RawImage.read(input) ⇒ *

Helper method for reading an image from a variety of input types.

Kind: static method of RawImage
Returns: * - The image object.

Example: Read image from a URL.

let image = await RawImage.read('https://huggingface.co/datasets/Xenova/transformers.js-docs/resolve/main/football-match.jpg');
// test 

RawImage.fromURL(url) ⇒ Promise.<RawImage>

Read an image from a URL or file path.

Kind: static method of RawImage
Returns: Promise.<RawImage> - The image object.

RawImage.fromBlob(blob) ⇒ Promise.<RawImage>

Helper method to create a new Image from a blob.

Kind: static method of RawImage
Returns: Promise.<RawImage> - The image object.