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 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 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 type of object does getImageData return?
A). PixelData
B). ImageData
C). CanvasData
D). ImageDataObject
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 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
Which method is used to blend colors when drawing on the canvas?
A). blendColors()
B). applyBlend()
C). globalAlpha()
D). setAlpha()
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