Q. Sobel operators were introduced in

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Q. Blurring attenuate the

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Q. A line is viewed as

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Q. Sobel is better than prewitt in image

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Q. Intensity's local changes can be detected through

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Q. For line detection we assume that lines are

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Q. Example of similarity approach in image segmentation is

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Q. The preferred direction of mask is weighted with the

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Q. Points other than exceeding the threshold in output image are marked as

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Q. In laplacian images dark shades of gray level is represented by

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Q. Pixels where intensity changes abruptly are called

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Q. Isolated point is also called

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Q. Points exceeding the threshold in output image are marked as

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Q. Example of discontinuity approach in image segmentation is

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Q. First derivative approximation says that values of intensities at the onset must be

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Q. Image segmentation is also based on

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Q. Image whose principle features are edges is called

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Q. Vertical lines are angles at

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Q. If R is the entire region of the image then union of all segmented parts should be equal to

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Q. Mask's response to zero means

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