Q1: Given the following (77) matrix, which represents the gray level in an image. Compute the following characteristics of the image: 1) Mean (average) gray level of the image, and could you tell whether this image is considered dark or light? 2) Variance. Could you tell if this image has low or high contrast? 3) Standard deviation 4) Use either Excel or MATLAB to draw the histogram for the gray level of that image 5) Calculate the percentage of pixels with a gray value of 205