Digital Images A four-level gray scale is shown below.
- (a) Use the gray scale to find a 6 × 6 matrix that digitally represents the image in the figure.
- (b) Find a matrix that represents a darker version of the image in the figure.
- (c) The negative of an image is obtained by reversing light and dark, as in the negative of a photograph. Find the matrix that represents the negative of the image in the figure. How do you change the elements of the matrix to create the negative?
- (d) Increase the contrast of the image by changing each 1 to a 0 and each 2 to a 3 in the matrix you found in part (a). Draw the image represented by the resulting matrix. Does this clarify the image?
- (e) Draw the image represented by the matrix I. Can you recognize what this is? If you don’t, try increasing the contrast.
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