Some additions to aos/vision/blob (transpose and move_scale).
Change-Id: I927144e27d0494f3ea879ebbd1647741f82e3c7b
diff --git a/aos/vision/blob/move_scale.h b/aos/vision/blob/move_scale.h
new file mode 100644
index 0000000..c113bca
--- /dev/null
+++ b/aos/vision/blob/move_scale.h
@@ -0,0 +1,35 @@
+#ifndef AOS_VISION_BLOB_MOVE_SCALE_H_
+#define AOS_VISION_BLOB_MOVE_SCALE_H_
+
+#include <vector>
+#include <limits>
+
+#include "aos/vision/blob/range_image.h"
+
+namespace aos {
+namespace vision {
+
+// Bounding box for a RangeImage.
+struct ImageBBox {
+ int minx = std::numeric_limits<int>::max();
+ int maxx = std::numeric_limits<int>::min();
+ int miny = std::numeric_limits<int>::max();
+ int maxy = std::numeric_limits<int>::min();
+};
+
+// Sums img into bbox. bbox is constructed empty and grows with each call
+// to GetBBox.
+void GetBBox(const RangeImage &img, ImageBBox *bbox);
+inline void GetBBox(const std::vector<RangeImage> &imgs, ImageBBox *bbox) {
+ for (const auto &img : imgs) GetBBox(img, bbox);
+}
+
+std::vector<RangeImage> MoveScale(const std::vector<RangeImage> &imgs, int dx,
+ int dy, int scale);
+
+RangeImage MoveScale(const RangeImage &img, int dx, int dy, int scale);
+
+} // namespace vision
+} // namespace aos
+
+#endif // AOS_VISION_BLOB_MOVE_SCALE_H_