RVU Step h is incorrect

[gfiumara]

@gfiumara Highlighting this issue raised by Sven, which I mentioned during the meeting briefly.

Furthermore, RVU 6.2.5.2. h) seems to have a mistake of stating
P(x) = 1 if S(x-1) < T(x), but in 6.2.3.6. f) it is stated P(x) = 1 if S(x) < T(x)
I think it might be copy-paste error in the norm arising from
C(x) = 1 if P(x-1) ≠ P(x)

Both RVU and LCL call the same function to get the ridge valley structure and it is not compared to S(x-1)
The S(x) < T(x) seems to match the MATLAB Olsen code

NFIQ2::QualityMeasures::getRidgeValleyStructure(const cv::Mat &blockCropped, std::vector<uint8_t> &ridval, std::vector<double> &dt)
......

for (unsigned int i = 0; i < dt.size(); i++) {
		if (v3.at<double>(i, 0) < dt[i]) {
			ridval.push_back(1);
		} else {
			ridval.push_back(0);
		}
	}

Originally posted by @LarsKooijman in #394

[gfiumara]

This seems like a typo. 6.2.5.2 h should be if S(x) < T(x), not S(x-1) < T(x). The transition vector in step i would be when you go from ridge to valley, and so you'd want to look at the previous block.