--- /dev/null
+#ifndef __bbox_h__
+#define __bbox_h__
+
+typedef struct _ibbox {
+ int xmin,ymin,xmax,ymax;
+ struct _ibbox*next;
+} ibbox_t;
+
+ibbox_t* ibbox_new(int x1, int y1, int x2, int y2);
+void ibbox_destroy(ibbox_t*b);
+ibbox_t*get_bitmap_bboxes(unsigned char*alpha, int width, int height);
+
+#endif //__bbox_h__