Wrong palm print comprasion computation

[IoNaNO]

EDCC-Palmprint-Recognition/src/core/comparer.cpp

Lines 18 to 24 in c908758

	while (lhs_md_cur_ptr < lhs_md_end_ptr) {
	uint8_t distance = *(uint8_t*)lhs_md_cur_ptr ^ *(uint8_t*)rhs_md_cur_ptr;
	if (distance == 0x00) { // same d, s.
	acc += 2;
	} else if (distance < 0x10) { // same d, diff s.
	acc += 0;
	}

Based on the matching stage's math definition
$$M\left(X,Y\right)=\frac{1}{2N^2}\sum_{i=1}^{N}\sum_{j=1}^{N}\left[\left(C_X\left(i,j\right)==C_Y\left(i,j\right)\right)+\left(C_X\left(i,j\right)==C_Y\left(i,j\right)\right)\cap\lnot\left(Cs_X\left(i,j\right)\oplus C s_Y\left(i,j\right)\right)\right]$$

When the variable $d$ is the same but the variable $s$ is different, the acc variable should be increased by 1.

In addition, if the variable $d$ is the same but the variable $s$ is different, the distance should yield a specific value of 0x10. It is not recommended to use a comparison expression for this simple operation; instead, an equality expression should be used.