Which parameter specifies the rectangular area from which pixel data will be extracted?
A). x-coordinate
B). y-coordinate
C). width
D). height
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
Which method is used to blend colors when drawing on the canvas?
A). blendColors()
B). applyBlend()
C). globalAlpha()
D). setAlpha()
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 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
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
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
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