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

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

A). 0 to 255

B). 0 to 100

C). 0 to 1

D). -255 to 255

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

A). getImageData()

B). drawPixelData()

C). setPixelData()

D). modifyImageData()

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

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

A). blendColors()

B). applyBlend()

C). globalAlpha()

D). setAlpha()

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 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

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

What does the putImageData method do?

A). Extracts pixel data

B). Draws pixel data onto the canvas

C). Modifies pixel data

D). Deletes pixel data

Which channel represents the red color in pixel data?

A). Red channel

B). Green channel

C). Blue channel

D). Alpha channel