(b) Explain how the MTF can indicate the best spatial resolution of an imaging system, and how the MTF can be experimentally measured. (c) A 3x3 Gaussian kernel (matrix) is used in an image processing application to describe a Gaussian PSF. Assume the Gaussian is centred on [2,2], has a full width at half maximum of 2 pixels ( o ~ 0.859) and a maximum value of 1. Calculate the values of this matrix. (d) Distinguish between convolution and correlation in both the image and frequency spaces. Compare their mathematical forms. Contrast the applications of these two operations. Which operation can be used to describe how an image is affected by the PSF of an imaging system? (b) Explain how the MTF can indicate the best spatial resolution of an imaging system, and how the MTF can be experimentally measured. (c) A 3x3 Gaussian kernel (matrix) is used in an image processing application to describe a Gaussian PSF. Assume the Gaussian is centred on [2,2], has a full width at half maximum of 2 pixels ( o ~ 0.859) and a maximum value of 1. Calculate the values of this matrix. (d) Distinguish between convolution and correlation in both the image and frequency spaces. Compare their mathematical forms. Contrast the applications of these two operations. Which operation can be used to describe how an image is affected by the PSF of an imaging system