Function createMaskOnly

Convert mask to grayscale black/white representation.

Creates a new canvas showing only the mask as a grayscale image. White areas represent the foreground, black areas represent the background. Useful for debugging mask quality or saving mask-only outputs.

Throws

When canvas context creation fails

Example

// Generate mask from model
const mask = processModelOutput(outputData, originalSize);

// Create mask-only visualization
const maskOnly = createMaskOnly(mask);

// Display mask for debugging
document.body.appendChild(maskOnly);

// Or save as blob
const maskBlob = await canvasToBlob(maskOnly);
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