What type of object does getImageData return?

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

A). getImageData()

B). drawPixelData()

C). setPixelData()

D). modifyImageData()

Which parameter specifies the rectangular area from which pixel data will be extracted?

A). x-coordinate

B). y-coordinate

C). width

D). height

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

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 of the following is NOT a use case for manipulating image data?

A). Image filtering

B). Text rendering

C). Pixel manipulation

D). Image processing

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 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

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 is passed as an argument to putImageData?

A). ImageDataObject

B). CanvasData

C). PixelData

D). ImageData

Which method is used to manipulate individual pixel values in pixel data?

A). modifyPixel()

B). setPixel()

C). updatePixel()

D). none of the above