diff --git a/components/esp-face b/components/esp-face
index 08ba977..9f64994 160000
--- a/components/esp-face
+++ b/components/esp-face
@@ -1 +1 @@
-Subproject commit 08ba977a6ccf5ab7868bd30af60b3f1702a1a9d2
+Subproject commit 9f64994450feeebc92350d9a66ab5b29d9fce2f4
diff --git a/examples/single_chip/camera_web_server/main/app_httpd.c b/examples/single_chip/camera_web_server/main/app_httpd.c
index de414b8..c450642 100644
--- a/examples/single_chip/camera_web_server/main/app_httpd.c
+++ b/examples/single_chip/camera_web_server/main/app_httpd.c
@@ -310,6 +310,7 @@ static esp_err_t capture_handler(httpd_req_t *req){
         }
 #endif
         draw_face_boxes(image_matrix, net_boxes, face_id);
+        free(net_boxes->score);
         free(net_boxes->box);
         free(net_boxes->landmark);
         free(net_boxes);
@@ -416,6 +417,7 @@ static esp_err_t stream_handler(httpd_req_t *req){
                                 fr_recognize = esp_timer_get_time();
 #endif
                                 draw_face_boxes(image_matrix, net_boxes, face_id);
+                                free(net_boxes->score);
                                 free(net_boxes->box);
                                 free(net_boxes->landmark);
                                 free(net_boxes);
@@ -691,16 +693,18 @@ void app_httpd_main(){
 
     ra_filter_init(&ra_filter, 20);
 #if CONFIG_ESP_FACE_DETECT_ENABLED
+    mtmn_config.type = FAST;
     mtmn_config.min_face = 80;
-    mtmn_config.pyramid = 0.7;
+    mtmn_config.pyramid = 0.707;
+    mtmn_config.pyramid_times = 4;
     mtmn_config.p_threshold.score = 0.6;
     mtmn_config.p_threshold.nms = 0.7;
-    mtmn_config.p_threshold.candidate_number = 100;
+    mtmn_config.p_threshold.candidate_number = 20;
     mtmn_config.r_threshold.score = 0.7;
     mtmn_config.r_threshold.nms = 0.7;
-    mtmn_config.r_threshold.candidate_number = 4;
+    mtmn_config.r_threshold.candidate_number = 10;
     mtmn_config.o_threshold.score = 0.7;
-    mtmn_config.o_threshold.nms = 0.4;
+    mtmn_config.o_threshold.nms = 0.7;
     mtmn_config.o_threshold.candidate_number = 1;
 #if CONFIG_ESP_FACE_RECOGNITION_ENABLED
     face_id_init(&id_list, FACE_ID_SAVE_NUMBER, ENROLL_CONFIRM_TIMES);
diff --git a/examples/single_chip/detection_with_command_line/main/app_facenet.c b/examples/single_chip/detection_with_command_line/main/app_facenet.c
index 06bc4b6..3335a13 100644
--- a/examples/single_chip/detection_with_command_line/main/app_facenet.c
+++ b/examples/single_chip/detection_with_command_line/main/app_facenet.c
@@ -33,16 +33,18 @@ static const char *TAG = "app_process";
 mtmn_config_t init_config()
 {
     mtmn_config_t mtmn_config = {0};
+    mtmn_config.type = FAST;
     mtmn_config.min_face = 80;
-    mtmn_config.pyramid = 0.7;
+    mtmn_config.pyramid = 0.707;
+    mtmn_config.pyramid_times = 4;
     mtmn_config.p_threshold.score = 0.6;
     mtmn_config.p_threshold.nms = 0.7;
-    mtmn_config.p_threshold.candidate_number = 100;
+    mtmn_config.p_threshold.candidate_number = 20;
     mtmn_config.r_threshold.score = 0.7;
     mtmn_config.r_threshold.nms = 0.7;
-    mtmn_config.r_threshold.candidate_number = 4;
+    mtmn_config.r_threshold.candidate_number = 10;
     mtmn_config.o_threshold.score = 0.7;
-    mtmn_config.o_threshold.nms = 0.4;
+    mtmn_config.o_threshold.nms = 0.7;
     mtmn_config.o_threshold.candidate_number = 1;
 
     return mtmn_config;
@@ -85,6 +87,7 @@ void task_process (void *arg)
         {
             frame_num++;
             ESP_LOGI(TAG, "DETECTED: %d\n", frame_num);
+            free(net_boxes->score);
             free(net_boxes->box);
             free(net_boxes->landmark);
             free(net_boxes);
diff --git a/examples/single_chip/recognition_solution/main/app_camera.c b/examples/single_chip/recognition_solution/main/app_camera.c
index 55aa7c1..3fa1f82 100644
--- a/examples/single_chip/recognition_solution/main/app_camera.c
+++ b/examples/single_chip/recognition_solution/main/app_camera.c
@@ -70,4 +70,13 @@ void app_camera_init()
         ESP_LOGE(TAG, "Camera init failed with error 0x%x", err);
         return;
     }
+
+    sensor_t *s = esp_camera_sensor_get();
+    //initial sensors are flipped vertically and colors are a bit saturated
+    if (s->id.PID == OV3660_PID)
+    {
+        s->set_vflip(s, 1);       //flip it back
+        s->set_brightness(s, 1);  //up the blightness just a bit
+        s->set_saturation(s, -2); //lower the saturation
+    }
 }
diff --git a/examples/single_chip/recognition_solution/main/app_httpserver.c b/examples/single_chip/recognition_solution/main/app_httpserver.c
index e78352f..5252bc9 100644
--- a/examples/single_chip/recognition_solution/main/app_httpserver.c
+++ b/examples/single_chip/recognition_solution/main/app_httpserver.c
@@ -283,6 +283,7 @@ esp_err_t facenet_stream_handler(httpd_req_t *req)
             }
 
             draw_face_boxes(image_matrix, net_boxes);
+            free(net_boxes->score);
             free(net_boxes->box);
             free(net_boxes->landmark);
             free(net_boxes);
diff --git a/examples/single_chip/recognition_wechat/main/app_camera.c b/examples/single_chip/recognition_wechat/main/app_camera.c
index 55aa7c1..3fa1f82 100644
--- a/examples/single_chip/recognition_wechat/main/app_camera.c
+++ b/examples/single_chip/recognition_wechat/main/app_camera.c
@@ -70,4 +70,13 @@ void app_camera_init()
         ESP_LOGE(TAG, "Camera init failed with error 0x%x", err);
         return;
     }
+
+    sensor_t *s = esp_camera_sensor_get();
+    //initial sensors are flipped vertically and colors are a bit saturated
+    if (s->id.PID == OV3660_PID)
+    {
+        s->set_vflip(s, 1);       //flip it back
+        s->set_brightness(s, 1);  //up the blightness just a bit
+        s->set_saturation(s, -2); //lower the saturation
+    }
 }
diff --git a/examples/single_chip/recognition_wechat/main/app_facenet.c b/examples/single_chip/recognition_wechat/main/app_facenet.c
index d02444a..68ec43a 100644
--- a/examples/single_chip/recognition_wechat/main/app_facenet.c
+++ b/examples/single_chip/recognition_wechat/main/app_facenet.c
@@ -37,16 +37,18 @@ extern QueueHandle_t gpst_output;
 static inline mtmn_config_t app_mtmn_config()
 {
     mtmn_config_t mtmn_config;
+    mtmn_config.type = FAST;
     mtmn_config.min_face = 80;
-    mtmn_config.pyramid = 0.7;
+    mtmn_config.pyramid = 0.707;
+    mtmn_config.pyramid_times = 4;
     mtmn_config.p_threshold.score = 0.6;
     mtmn_config.p_threshold.nms = 0.7;
-    mtmn_config.p_threshold.candidate_number = 100;
-    mtmn_config.r_threshold.score = 0.6;
+    mtmn_config.p_threshold.candidate_number = 20;
+    mtmn_config.r_threshold.score = 0.7;
     mtmn_config.r_threshold.nms = 0.7;
-    mtmn_config.r_threshold.candidate_number = 4;
-    mtmn_config.o_threshold.score = 0.6;
-    mtmn_config.o_threshold.nms = 0.4;
+    mtmn_config.r_threshold.candidate_number = 10;
+    mtmn_config.o_threshold.score = 0.7;
+    mtmn_config.o_threshold.nms = 0.7;
     mtmn_config.o_threshold.candidate_number = 1;
 
     return mtmn_config;
diff --git a/examples/single_chip/recognition_with_command_line/main/app_facenet.c b/examples/single_chip/recognition_with_command_line/main/app_facenet.c
index be0d698..4fa32ea 100644
--- a/examples/single_chip/recognition_with_command_line/main/app_facenet.c
+++ b/examples/single_chip/recognition_with_command_line/main/app_facenet.c
@@ -52,15 +52,18 @@ char *number_suffix(int32_t number)
 mtmn_config_t init_config()
 {
     mtmn_config_t mtmn_config = {0};
+    mtmn_config.type = FAST;
     mtmn_config.min_face = 80;
-    mtmn_config.pyramid = 0.7;
+    mtmn_config.pyramid = 0.707;
+    mtmn_config.pyramid_times = 4;
     mtmn_config.p_threshold.score = 0.6;
     mtmn_config.p_threshold.nms = 0.7;
+    mtmn_config.p_threshold.candidate_number = 20;
     mtmn_config.r_threshold.score = 0.7;
     mtmn_config.r_threshold.nms = 0.7;
-    mtmn_config.r_threshold.candidate_number = 4;
+    mtmn_config.r_threshold.candidate_number = 10;
     mtmn_config.o_threshold.score = 0.7;
-    mtmn_config.o_threshold.nms = 0.4;
+    mtmn_config.o_threshold.nms = 0.7;
     mtmn_config.o_threshold.candidate_number = 1;
 
     return mtmn_config;
@@ -174,6 +177,7 @@ void task_process(void *arg)
                 ESP_LOGI(TAG, "Detected face is not proper.");
             }
 
+            free(net_boxes->score);
             free(net_boxes->box);
             free(net_boxes->landmark);
             free(net_boxes);