CBC_CommonBitMatrix* CBC_QRGridSampler::SampleGrid(CBC_CommonBitMatrix* image,
int32_t dimensionX,
int32_t dimensionY,
FX_FLOAT p1ToX,
FX_FLOAT p1ToY,
FX_FLOAT p2ToX,
FX_FLOAT p2ToY,
FX_FLOAT p3ToX,
FX_FLOAT p3ToY,
FX_FLOAT p4ToX,
FX_FLOAT p4ToY,
FX_FLOAT p1FromX,
FX_FLOAT p1FromY,
FX_FLOAT p2FromX,
FX_FLOAT p2FromY,
FX_FLOAT p3FromX,
FX_FLOAT p3FromY,
FX_FLOAT p4FromX,
FX_FLOAT p4FromY,
int32_t& e) {
CBC_AutoPtr<CBC_CommonPerspectiveTransform> transform(
CBC_CommonPerspectiveTransform::QuadrilateralToQuadrilateral(
p1ToX, p1ToY, p2ToX, p2ToY, p3ToX, p3ToY, p4ToX, p4ToY, p1FromX,
p1FromY, p2FromX, p2FromY, p3FromX, p3FromY, p4FromX, p4FromY));
CBC_CommonBitMatrix* tempBitM = new CBC_CommonBitMatrix();
tempBitM->Init(dimensionX, dimensionY);
CBC_AutoPtr<CBC_CommonBitMatrix> bits(tempBitM);
CFX_FloatArray points;
points.SetSize(dimensionX << 1);
for (int32_t y = 0; y < dimensionY; y++) {
int32_t max = points.GetSize();
FX_FLOAT iValue = (FX_FLOAT)(y + 0.5f);
int32_t x;
for (x = 0; x < max; x += 2) {
points[x] = (FX_FLOAT)((x >> 1) + 0.5f);
points[x + 1] = iValue;
}
transform->TransformPoints(&points);
CheckAndNudgePoints(image, &points, e);
BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
for (x = 0; x < max; x += 2) {
if (image->Get((int32_t)points[x], (int32_t)points[x + 1])) {
bits->Set(x >> 1, y);
}
}
}
int32_t CBC_PDF417CodewordDecoder::getClosestDecodedValue(
CFX_Int32Array& moduleBitCount) {
int32_t bitCountSum = CBC_PDF417Common::getBitCountSum(moduleBitCount);
CFX_FloatArray bitCountRatios;
bitCountRatios.SetSize(CBC_PDF417Common::BARS_IN_MODULE);
for (int32_t i = 0; i < bitCountRatios.GetSize(); i++) {
bitCountRatios[i] = moduleBitCount.GetAt(i) / (FX_FLOAT)bitCountSum;
}
FX_FLOAT bestMatchError = std::numeric_limits<int32_t>::max();
int32_t bestMatch = -1;
for (int32_t j = 0; j < SYMBOL_TABLE_Length; j++) {
FX_FLOAT error = 0.0f;
for (int32_t k = 0; k < CBC_PDF417Common::BARS_IN_MODULE; k++) {
FX_FLOAT diff = RATIOS_TABLE[j][k] - bitCountRatios[k];
error += diff * diff;
}
if (error < bestMatchError) {
bestMatchError = error;
bestMatch = CBC_PDF417Common::SYMBOL_TABLE[j];
}
}
return bestMatch;
}
