1. Which of the element-wise mathematical operations and bitwise operations would produce the exact same results?
2. What is the purpose of the gemm function in OpenCV? What is the equivalent of A*B with the gemm function?
3. Use the borderInterpolate function to calculate the value of a non-existing pixel at point (-10, 50), with a border type of BORDER_REPLICATE. What is the function call required for such a calculation?
4. Create the same identity matrix as in the Learning about the dentity matrix section of this chapter, but use the setIdentity function instead of the Mat::eye function.
5. Write a program using the LUT function (lookup table transformation) that performs the same task as bitwise_not (invert colors) when executed on grayscale and color (RGB) images.
6. Besides normalizing the values of a matrix, the normalize function can be used to brighten or darken images. Write the required function call to darken and brighten a grayscale image using the normalize function.
7. Remove the blue channel (first channel) from an image (BGR image created using the imread function) using the merge and split functions.