What is the range of values for each color channel in pixel data?

Which channel represents the red color in pixel data?

A). Red channel

B). Green channel

C). Blue channel

D). Alpha channel

What is the purpose of the alpha channel in pixel data?

A). To represent brightness

B). To represent transparency

C). To represent color intensity

D). To represent contrast

Which method is used to blend colors when drawing on the canvas?

A). blendColors()

B). applyBlend()

C). globalAlpha()

D). setAlpha()

What happens if the dimensions of the ImageData object passed to putImageData do not match the canvas?

A). An error occurs

B). The image is resized

C). The image is cropped

D). The image is stretched

Which method is used to extract pixel data from a canvas?

A). getImageData()

B). drawPixelData()

C). setPixelData()

D). modifyImageData()

How can you create a grayscale effect using getImageData and putImageData?

A). Set all RGB channels to the same value

B). Invert the colors

C). Convert to black and white

D). Apply a blur effect

What type of object does getImageData return?

A). PixelData

B). ImageData

C). CanvasData

D). ImageDataObject

What type of object is passed as an argument to putImageData?

A). ImageDataObject

B). CanvasData

C). PixelData

D). ImageData

Which statement is true about the performance of manipulating pixel data?

A). It has no impact on performance

B). It can improve performance

C). It always reduces performance

D). Performance depends on the browser

What is the purpose of using getImageData and putImageData for image editing applications?

A). To create animations

B). To apply filters and effects

C). To add text to images

D). To resize images