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 is the purpose of modifying pixel data with getImageData and putImageData?
A). To change canvas size
B). To animate images
C). To manipulate image colors
D). To add text to images
What type of object does getImageData return?
A). PixelData
B). ImageData
C). CanvasData
D). ImageDataObject
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 of the following is NOT a use case for manipulating image data?
A). Image filtering
B). Text rendering
C). Pixel manipulation
D). Image processing
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
Which method is used to draw pixel data onto the canvas?
A). drawPixelData()
B). putPixelData()
C). displayImageData()
D). putImageData()
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()