Design Statement: In our designed procedure image-series, we are mainly exploring colors, shapes and sizes in the image. The procedure will give the viewer a distinct image when giving a specific value within the range of  0-999 inclusively, the width of the image and the height of the image. The n value changes the colors and the shapes of some of the subjects in the outcome image. The procedure draws a circle in the top left corner, two arches in the bottom right corner, three five-star shapes in the bottom left region, and eight parallel lines mostly in the top right region in the image. Among all these subjects, only the colors and shapes of the parallel lines remain unchanged, while the circle and the arches will obtain different colors but fixed shapes and positions when giving a specific n value.  At the same time, all of the colors, positions and shapes of the three five-star subjects could be changed according to a given n value.

Technique  Statement: We implemented several techniques such as turtle graphics, GIMP painting tools, and recursive procedures in the drawing. A circle is drawn by using image-compute-pixels!.The pixels within the circle obtain a specific color according to both its distance from the center and the given n value. The defined procedure five-star draws three five-star shapes on basis of turtle graphics. We have three fixed positions, unknown lengths and unknown rotating angles for those three subjects (we have given three values for both angels and lengths in the lists). The assigned lengths and angels depend on the modulo of the n value divided by three. Also, we obtain three quotients resulted from the division of the n value and three given numbers in our procedure. The quotients, which refer to three specific colors in three color lists: “purple”, “orange” and “red”, help us respectively color those shapes. The recursive procedure that we used to draw fixed arch shapes is image-string-art!. The colors of the two arches rely on the quotient, which will give each of the arches a color according to the corresponding elements in two different color lists: “pink” and “blue”, resulted from the division of the n value and given numbers in our procedure. Meanwhile, the GIMP tool procedure used is draw-colored-parallel-lines, which draws eight different but unchanged colored parallel lines, whose positions remain unchanged no matter what are the n values given. 

We choose 100, 501, and 902 as our three distinct n values.