$10\mathrm{.}34$ Refer to the basic global thresholding algorithm in Section $10\mathrm{.}3.$ Assume that in a given problem, the histogram is bimodal with modes that are Gaussian curves of the form $A_1$exp$[-\frac{(z-m_1{)}^2}{2}{}_1^2]$ and $A_2$exp$[-\frac{(z-m_2{)}^2}{2}{}_2^2].$ Assume that $m_1$ is