flip image, change colours, add countdown, clickable previews

.vscode/launch.json

@@ -0,0 +1,26 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Python: Current File",
+            "type": "python",
+            "request": "launch",
+            "program": "${file}",
+            "console": "integratedTerminal"
+        }, 
+        {
+            "name": "Python: Mirror",
+            "type": "python",
+            "request": "launch",
+            "program": "mirror.py",
+            "args": [
+                    // "--fullscreen",
+                    "--camera", "2",
+                ],
+            "console": "integratedTerminal"
+        }
+    ]
+}

README.md

@@ -0,0 +1,31 @@
+A `mirror` which shows which faces are detected through three different facial detection algorithms:
+
+* OpenCV's deep neural net [face detector](https://github.com/opencv/opencv/tree/master/samples/dnn/face_detector).
+* Dlib's default frontal face detector, which is HOG based
+* A Viola-Jones Haarcascade detection. Any OpenCV compatible xml file should work. It defaults to the canonical `haarcascade_frontalface_alt2.xml`.
+
+# Installation
+
+
+## on windows
+
+The installation in Windows can be done, though it is quite elaborate:
+
+* Install rustup-init
+* Install VS C++
+* Install python3
+* Install Cmake (needed for python dlib)
+    + make sure to add it to path 
+* Install git
+    + including ssh deploy key
+* `git clone https://git.rubenvandeven.com/r/face_detector`
+* `cd face_recognition`
+* `git submodules init`
+* `git submodules update`
+* `pip install virtualenv`
+* `virtualenv.exe venv`
+* `.\venv\Scripts\activate`
+* `cd .\dnn\face_detector`
+* `python.exe .\download_weights.py`
+* `cd .\visualhaar`
+* `cargo build --lib`

face_recognition/comparison.py

@@ -5,14 +5,15 @@ import logging
 import argparse
 import numpy as np
 import time
+import math
 import datetime
 from PIL import ImageFont, ImageDraw, Image
 import os
 
 draw_colors = {
-    'hog': (198,65,124),
+    'hog': (255,255,255), #(198,65,124),
     'haar': (255,255,255),
-    'dnn': (251,212,36),
+    'dnn': (255,255,255) #(251,212,36),
 }
 
 titles = {
@@ -25,6 +26,7 @@ fontfile = "SourceSansPro-Regular.ttf"
 
 font = ImageFont.truetype(fontfile, 30)
 font_s = ImageFont.truetype(fontfile, 20)
+countdown_font = ImageFont.truetype(fontfile, 160)
 
 class Result():
     def __init__(self, algorithm, image, confidence_threshold = 0.5):
@@ -80,7 +82,7 @@ class Result():
             alpha = 1
         else:
             # At least 10% opacity
-            alpha = max(.3, detection['confidence'])
+            alpha = max(.2, detection['confidence'])
 
         color = list(color)
         color.append(int(alpha*255))
@@ -119,6 +121,8 @@ def record(device_id, q1,q2, q3, q4, resolution, rotate):
 
     capture.set(cv2.CAP_PROP_FRAME_WIDTH, resolution[1] if is_rotated_90 else resolution[0])
     capture.set(cv2.CAP_PROP_FRAME_HEIGHT, resolution[0] if is_rotated_90 else resolution[1])
+
+    gave_camera_warning = False
     
     while True:
         ret, image = capture.read()
@@ -130,9 +134,13 @@ def record(device_id, q1,q2, q3, q4, resolution, rotate):
         if rotate is not None:
             image = cv2.rotate(image, rotate)
 
+        # Flip image to create the 'mirror' effect.
+        image = cv2.flip(image, 1)
+
         # print(image.shape[:2], image.shape[1::-1])
-        if image.shape[1::-1] != resolution:
+        if image.shape[1::-1] != resolution and not gave_camera_warning:
             logging.warning(f"Camera resultion seems wrong: {image.shape[:2]} instead of {resolution}")
+            gave_camera_warning = True
 
         try:
             q1.put_nowait(image)
@@ -283,7 +291,7 @@ def process2_dnn(in_q, out_q):
     prototxt = "dnn/face_detector/opencv_face_detector.pbtxt"
     prototxt = "dnn/face_detector/deploy.prototxt"
     model = "dnn/face_detector/res10_300x300_ssd_iter_140000_fp16.caffemodel"
-    confidence_threshold = 0.5
+    confidence_threshold = 0.7
     
     logger.info("[INFO] loding model...")
     net = cv2.dnn.readNetFromCaffe(prototxt, model)
@@ -371,7 +379,7 @@ def process3_haar(in_q, out_q, cascade_file):
         frame = in_q.get()
         (height_orig, width_orig) = frame.shape[:2]
 
-        scale_factor = 3
+        scale_factor = 4
         width = int(width_orig/scale_factor)
         height = int(height_orig/scale_factor)
         
@@ -426,7 +434,7 @@ def process3_haar(in_q, out_q, cascade_file):
         # print(img)
         out_q.put(result)
 
-def draw_stats(image, results):
+def draw_stats(image, results, padding):
     pil_im = Image.fromarray(cv2.cvtColor(image, cv2.COLOR_BGR2RGB))
     draw = ImageDraw.Draw(pil_im, 'RGBA')
 
@@ -437,7 +445,8 @@ def draw_stats(image, results):
         c = result.count_detections()
         txt = "face" if c == 1 else "faces"
         txt = f"{result.algorithm.ljust(5)} {c} {txt}"
-        draw.text((10, pil_im.size[1] - i*25 - 50), txt, fill=draw_colors[result.algorithm], font=font_s, stroke_width=1, stroke_fill=(0,0,0))
+        height = padding + 25
+        draw.text((padding, pil_im.size[1] - i*height - height), txt, fill=draw_colors[result.algorithm], font=font_s, stroke_width=1, stroke_fill=(0,0,0))
 
     return cv2.cvtColor(np.array(pil_im), cv2.COLOR_RGB2BGR)
     
@@ -447,19 +456,50 @@ def display(image_res, q1, q2, q3, q4, fullscreen, output_dir):
 
     empty_image = np.zeros((image_res[1],image_res[0],3), np.uint8)
 
+    image_ratio = image_res[0] / image_res[1]
+
     results = [None, None, None]
     result_queues = [q2, q3, q4]
     images = [empty_image, empty_image, empty_image, empty_image]
 
+
     override_image = None
     override_until = None
+    countdown_until = None
+
+    # imageIdx = 0
+
+    # grid in the right corner
+    preview_scale = 10
+    preview_width = round(image_res[0] / preview_scale)
+    preview_height = round(preview_width / image_ratio)
+    padding = round(image_res[0] / 100)
+
 
     if fullscreen:
-        cv2.namedWindow("output", cv2.WND_PROP_FULLSCREEN)
+        cv2.namedWindow("output", cv2.WINDOW_NORMAL)
         cv2.setWindowProperty("output",cv2.WND_PROP_FULLSCREEN,cv2.WINDOW_FULLSCREEN)
+    else:
+        cv2.namedWindow("output", cv2.WINDOW_AUTOSIZE)
+        
+    def selectPreview(event, x, y, flags, param):
+        if event == cv2.EVENT_LBUTTONDOWN:
+            if x > image_res[0] - padding or x < image_res[0] - padding - preview_width:
+               return
+               
+            preview_images = [idx for idx,image in enumerate(images) if idx != selectPreview.imageIdx]
+            for offset, image_nr in enumerate(preview_images):
+                offset_y = (preview_height + padding) * offset
+                # print(offset, y, image_res[0] - padding - preview_height - offset_y, image_res[0] - padding - offset_y)
+                if y > image_res[1] - padding - preview_height - offset_y and y < image_res[1] - padding - offset_y:
+                    selectPreview.imageIdx = image_nr
+                    print("Select image", offset, image_nr)
+                    break
+                   
+    selectPreview.imageIdx = 0
+    cv2.setMouseCallback('output', selectPreview)
 
     while True:
-        logging.debug('r')
         try:
             image = q1.get_nowait()
             images[0] = cv2.resize(image, (image_res[0], image_res[1]))
@@ -481,30 +521,60 @@ def display(image_res, q1, q2, q3, q4, fullscreen, output_dir):
         else:
             override_image = None
 
-            images[0] = draw_stats(images[0], results)
+            # images[0] = draw_stats(images[0], results)
+
+            # show the selected image:
+            grid_img = images[selectPreview.imageIdx].copy()
+            
+            # previews in the right bottom corner
+            preview_images = [image for idx,image in enumerate(images) if idx != selectPreview.imageIdx]
+            for idx, image in enumerate(preview_images):
+                offset_y = (preview_height + padding) * idx
+                grid_img[
+                    grid_img.shape[0] - padding - preview_height - offset_y:grid_img.shape[0] - padding - offset_y,
+                    grid_img.shape[1] - padding - preview_width:grid_img.shape[1] - padding] = cv2.resize(image, (preview_width, preview_height), cv2.INTER_CUBIC)
+
+            # statistics
+            grid_img = draw_stats(grid_img, results, padding)
+            pil_im = Image.fromarray(cv2.cvtColor(grid_img, cv2.COLOR_BGR2RGB))
+            draw = ImageDraw.Draw(pil_im, 'RGBA')
+
+            # Draw countdown
+            if countdown_until:
+                duration = math.ceil(countdown_until - time.time())
+                w, h = draw.textsize(f"{duration}", font=countdown_font)
+                draw.text(((grid_img.shape[1]-w)/2,(grid_img.shape[0]-h)/2), f"{duration}", fill="white", stroke="black", font=countdown_font)
 
-            img_concate_Verti1 = np.concatenate((images[0],images[1]),axis=0)
-            img_concate_Verti2 = np.concatenate((images[2],images[3]),axis=0)
-            grid_img = np.concatenate((img_concate_Verti1,img_concate_Verti2),axis=1)
+            grid_img = cv2.cvtColor(np.array(pil_im), cv2.COLOR_RGB2BGR)
+            
+            # img_concate_Verti1 = np.concatenate((images[0],images[1]),axis=0)
+            # img_concate_Verti2 = np.concatenate((images[2],images[3]),axis=0)
+            # grid_img = np.concatenate((img_concate_Verti1,img_concate_Verti2),axis=1)
             cv2.imshow("output", grid_img)
     
         # Hit 'q' on the keyboard to quit!
         key = cv2.waitKey(1) & 0xFF
         if key  == ord('q'):
             break
-        if key == ord(' '):
+        if key == ord(' ') and not override_image:
+            countdown_until = time.time() + 3 # seconds of countdown
+        
+        if countdown_until is not None and time.time() > countdown_until:
+            countdown_until = None
             # TODO wait for frame to be processed. Eg. if I move and make a pic, it should use the last frame...
-            output_res = (image_res[0] *2, image_res[1] * 2)
+            # SNAP!
+            # output_res = (image_res[0] *2, image_res[1] * 2)
+            output_res = image_res # no scaling needed anyore
             pil_im = Image.fromarray(cv2.cvtColor(images[0], cv2.COLOR_BGR2RGB))
             pil_im = pil_im.resize(output_res)
             draw = ImageDraw.Draw(pil_im, 'RGBA')
-            
+
             for result in results:
                 if result is None:
                     continue
-                
+
                 result.resize(output_res[0], output_res[1]).draw_detections_on(draw)
-            
+
             override_image = cv2.cvtColor(np.array(pil_im), cv2.COLOR_RGB2BGR)
             override_until = time.time() + 5
             logger.info("Show frame until %f", override_until)
@@ -514,10 +584,12 @@ def display(image_res, q1, q2, q3, q4, fullscreen, output_dir):
             cv2.imwrite(os.path.join(output_dir, f'{name}.png'),override_image)
             for result in results:
                 cv2.imwrite(os.path.join(output_dir, f'{name}-{result.algorithm}.png'),result.visualisation)
+
             
 
+
 def main(camera_id, rotate, fullscreen, cascade_file, output_dir):
-    image_size = (int(1920/2), int(1080/2))
+    image_size = (1920, 1080) #(int(1920/2), int(1080/2))
 
     if not os.path.exists(cascade_file):
         raise RuntimeError(f"Cannot load OpenCV haar-cascade file '{cascade_file}'")

visualhaar

@@ -1 +1 @@
-Subproject commit 928da82d24de1ae2cef268c140f9992b0614806b
+Subproject commit 7c7ae29bf9e1390ea304e3708e8f92f6d57f87ff