Which method is used to draw pixel data onto the canvas?
A). drawPixelData()
B). putPixelData()
C). displayImageData()
D). putImageData()
Which parameter specifies the rectangular area from which pixel data will be extracted?
A). x-coordinate
B). y-coordinate
C). width
D). height
Which channel represents the red color in pixel data?
A). Red channel
B). Green channel
C). Blue channel
D). Alpha channel
Which method is used to blend colors when drawing on the canvas?
A). blendColors()
B). applyBlend()
C). globalAlpha()
D). setAlpha()
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 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
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
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 extract pixel data from a canvas?
A). getImageData()
B). drawPixelData()
C). setPixelData()
D). modifyImageData()
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