What is the purpose of the blur effect in image processing?
A). To enhance image edges
B). To reduce image noise
C). To soften and blend image details
D). To increase image contrast
How can a pixelation effect be achieved in image processing?
A). By adjusting image brightness
B). By applying a blur effect
C). By reducing image resolution
D). By increasing image contrast
Which channel is primarily responsible for controlling image transparency?
A). Red channel
B). Green channel
C). Blue channel
D). Alpha channel
Which effect can be achieved by setting all RGB channels of a pixel to the same value?
A). Sepia tone effect
B). Blur effect
C). Grayscale conversion
D). Color inversion effect
Which filter is commonly used to reverse the colors in an image?
A). Grayscale filter
B). Color inversion filter
C). Sepia tone filter
D). Blur filter
How can a mosaic effect be achieved in image processing?
A). By blurring image details
B). By applying color gradients
C). By dividing the image into blocks
D). By adjusting image brightness
Which technique is commonly used to remove image noise and artifacts?
A). Sharpening effect
B). Histogram equalization
C). Gaussian blur effect
D). Color inversion effect
Which technique can be used to create a vignette effect in photography?
A). Adjusting image brightness
B). Blurring image edges
C). Adding color gradients
D). Applying a sepia tone effect
What happens when the alpha channel value of a pixel is set to zero?
A). The pixel becomes transparent
B). The pixel becomes opaque
C). The pixel becomes white
D). The pixel becomes black
What does the Gaussian blur effect primarily enhance in an image?
A). Edges and details
B). Image brightness
C). Image color saturation
D). Image noise