Letter box is disabled in the darknet.py by defualt

build/darknet/x64/darknet.py

@@ -235,7 +235,7 @@ def detect(net, meta, image, thresh=.5, hier_thresh=.5, nms=.45, debug= False):
     if debug: print("Assigned pnum")
     predict_image(net, im)
     if debug: print("did prediction")
-    dets = get_network_boxes(net, im.w, im.h, thresh, hier_thresh, None, 0, pnum, 1)
+    dets = get_network_boxes(net, im.w, im.h, thresh, hier_thresh, None, 0, pnum, 0)
     if debug: print("Got dets")
     num = pnum[0]
     if debug: print("got zeroth index of pnum")

darknet.py

@@ -235,7 +235,7 @@ def detect(net, meta, image, thresh=.5, hier_thresh=.5, nms=.45, debug= False):
     if debug: print("Assigned pnum")
     predict_image(net, im)
     if debug: print("did prediction")
-    dets = get_network_boxes(net, im.w, im.h, thresh, hier_thresh, None, 0, pnum, 1)
+    dets = get_network_boxes(net, im.w, im.h, thresh, hier_thresh, None, 0, pnum, 0)
     if debug: print("Got dets")
     num = pnum[0]
     if debug: print("got zeroth index of pnum")

src/image.h

@@ -30,7 +30,7 @@ image crop_image(image im, int dx, int dy, int w, int h);
 image random_crop_image(image im, int w, int h);
 image random_augment_image(image im, float angle, float aspect, int low, int high, int size);
 void random_distort_image(image im, float hue, float saturation, float exposure);
-image resize_image(image im, int w, int h);
+YOLODLL_API image resize_image(image im, int w, int h);
 void fill_image(image m, float s);
 void letterbox_image_into(image im, int w, int h, image boxed);
 YOLODLL_API image letterbox_image(image im, int w, int h);

src/network.c

@@ -640,7 +640,8 @@ void free_detections(detection *dets, int n)
 
 float *network_predict_image(network *net, image im)
 {
-	image imr = letterbox_image(im, net->w, net->h);
+	//image imr = letterbox_image(im, net->w, net->h);
+	image imr = resize_image(im, net->w, net->h);
 	set_batch_network(net, 1);
 	float *p = network_predict(*net, imr.data);
 	free_image(imr);