c. Table Q10c displays the Discrete Cosine Transform (DCT) coefficients for a JPEG encoder following application of the Q-table in Figure Q10b to an 88 pixel macroblock (MB), where each DCT coefficient has been both quantised and had a thresholding value of l=2 applied. i. Determine the zig-zag pattern JPEG bitstream for this MB. ii. What is the dc coefficient value of this MB? iii. How is the dc coefficient encoded in the JPEG bitstream? iv. Hence, explain the reason why the dc coefficient is encoded differently from all the ac coefficients in the bitstream. v. Given the level of DCT quantising/thresholding for the ac coefficients in this MB, what is the approximate compression ratio achieved? vi. Run Length Encoding (RLE) is now applied to the ac coefficients in the JPEG bitstream obtained in part i. Assuming an End-of-Block code 00 is used, what will be the resulting RLE sequence? Table Q10c: Quantised DCT 88 pixel MB