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 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 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 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 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
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
What type of object is passed as an argument to putImageData?
A). ImageDataObject
B). CanvasData
C). PixelData
D). ImageData
Which method is used to blend colors when drawing on the canvas?
A). blendColors()
B). applyBlend()
C). globalAlpha()
D). setAlpha()