stitcher: optimize the image quality
diff --git a/xcore/interface/feature_match.cpp b/xcore/interface/feature_match.cpp
index 82a0118..4a6a428 100644
--- a/xcore/interface/feature_match.cpp
+++ b/xcore/interface/feature_match.cpp
@@ -81,7 +81,7 @@
sum = 0.0f;
for (size_t i = 0; i < offsets.size (); ++i) {
- if (fabs (offsets[i] - mean_offset) >= 8.0f)
+ if (fabs (offsets[i] - mean_offset) >= _config.recur_offset_error)
continue;
sum += offsets[i];
++recur_count;
@@ -123,11 +123,13 @@
int last_overlap_width = stitch1.pos_x + stitch1.width + (dst_width - (stitch0.pos_x + stitch0.width));
// int final_overlap_width = stitch1.pos_x + stitch1.width + (dst_width - (stitch0.pos_x - x_offset + stitch0.width));
+ if ((stitch0.pos_x - x_offset + stitch0.width) > dst_width)
+ x_offset = dst_width - (stitch0.pos_x + stitch0.width);
int final_overlap_width = last_overlap_width + x_offset;
final_overlap_width = XCAM_ALIGN_AROUND (final_overlap_width, 8);
XCAM_ASSERT (final_overlap_width >= _config.sitch_min_width);
int center = final_overlap_width / 2;
- XCAM_ASSERT (center > _config.sitch_min_width / 2);
+ XCAM_ASSERT (center >= _config.sitch_min_width / 2);
stitch1.pos_x = XCAM_ALIGN_AROUND (center - _config.sitch_min_width / 2, 8);
stitch1.width = _config.sitch_min_width;
diff --git a/xcore/interface/feature_match.h b/xcore/interface/feature_match.h
index c73cbb4..06c0b7b 100644
--- a/xcore/interface/feature_match.h
+++ b/xcore/interface/feature_match.h
@@ -33,14 +33,20 @@
int min_corners; // number of minimum efficient corners
float offset_factor; // last_offset * offset_factor + cur_offset * (1.0f - offset_factor)
float delta_mean_offset; // cur_mean_offset - last_mean_offset
- float max_adjusted_offset; // max offset of each adjustment
+ float recur_offset_error; // cur_offset - mean_offset
+ float max_adjusted_offset; // maximum offset of each adjustment
+ float max_valid_offset_y; // valid maximum offset in vertical direction
+ float max_track_error; // maximum track error
CVFMConfig ()
: sitch_min_width (56)
, min_corners (8)
, offset_factor (0.8f)
, delta_mean_offset (5.0f)
+ , recur_offset_error (8.0f)
, max_adjusted_offset (12.0f)
+ , max_valid_offset_y (8.0f)
+ , max_track_error (24.0f)
{}
};
