Update to working greyscale recognition

GestureRecognition/HandRecGray.py

@@ -0,0 +1,62 @@
+# -*- coding: utf-8 -*-
+"""
+Created on Thu Nov 22 14:16:46 2018
+
+@author: pivatom
+"""
+
+import numpy as np
+import cv2
+
+img = cv2.imread('H:\car\GestureRecognition\IMG_0818.png', 1)
+
+# Downscale the image
+img = cv2.resize(img, None, fx=0.1, fy=0.1, interpolation = cv2.INTER_AREA)
+
+img_gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
+
+img_gray[img_gray[:,:] > 90] = 255
+img_gray[img_gray[:,:] < 90] = 0
+
+# Threshold to binary.
+ret,img_thresh = cv2.threshold(img_gray, 127, 255, cv2.THRESH_BINARY)
+
+# Doesn't take too long.
+k = np.sum(img_thresh) / 255
+
+x_ind = np.indices(img_thresh.shape[1])
+coords = np.zeros(img_thresh.shape)
+
+
+# generate individual coordinates for x then transpose the matrix o
+#
+# First sum x coordinates.
+#xb = int(img_ind[img_thresh == 255].sum(axis=1).sum()/k)
+#print(xb)
+# Then sum y coordinates
+#yb = int(img_ind[img_thresh == 255].sum(axis=0).sum()/k)
+#print(yb)
+
+x,y,k,xb,yb = 0,0,0,0,0
+
+# this is inherently slow...like very very slow...
+for pix in img_thresh:
+    for j in pix:
+        if j == 255:
+            k += 1
+            xb += x
+            yb += y
+        x += 1
+    y += 1
+    x = 0
+    
+centre = (int(xb/k), int(yb/k))
+
+cv2.rectangle(img_thresh, centre, (centre[0] + 20, centre[1] + 20), (0,0,255), 3)
+cv2.circle(img_thresh, centre, 140, (0,0,0), 3)
+
+# Now need to trace around the circle to figure out where the fingers are.
+
+cv2.imshow("Binary-cot-out", img_thresh)
+cv2.waitKey(0)
+cv2.destroyAllWindows()

GestureRecognition/HandRecHSV.py

@@ -0,0 +1,61 @@
+# -*- coding: utf-8 -*-
+"""
+Created on Thu Nov 22 10:51:21 2018
+
+@author: pivatom
+"""
+
+import numpy as np
+import cv2
+
+img = cv2.imread('H:\car\GestureRecognition\IMG_0818.png', 1)
+
+# Downscale the image
+img = cv2.resize(img, None, fx=0.1, fy=0.1, interpolation = cv2.INTER_AREA)
+
+img_gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
+
+img_gray[img_gray[:,:] > 90] = 255
+img_gray[img_gray[:,:] < 90] = 0
+
+# Threshold to binary.
+ret,img_thresh = cv2.threshold(img_gray, 127, 255, cv2.THRESH_BINARY)
+
+x,y,k,xb,yb = 0,0,0,0,0
+
+# this is inherently slow...
+for pix in img_thresh:
+    for j in pix:
+        if j == 255:
+            k += 1
+            xb += x
+            yb += y
+        x += 1
+    y += 1
+    x = 0
+    
+centre = (int(xb/k), int(yb/k))
+print(centre)
+
+cv2.rectangle(img_thresh, centre, (centre[0] + 20, centre[1] + 20), (0,0,255), 3)
+cv2.circle(img_thresh, centre, 140, (0,0,0), 3)
+
+# Now need to trace around the circle to figure out where the fingers are.
+
+cv2.imshow("Binary-cot-out", img_thresh)
+cv2.waitKey(0)
+cv2.destroyAllWindows()
+
+
+
+#img_hsv = cv2.cvtColor(img, cv2.COLOR_BGR2HSV)
+
+#lower_skin = np.array([2, 102, 153])
+#upper_skin = np.array([7.5, 153, 255])
+#
+## Only need mask, as we can just use this to calculate the 
+#mask = cv2.inRange(img_hsv, lower_skin, upper_skin)
+#
+#cv2.imshow("Mask", mask)
+#cv2.waitKey(0)
+#cv2.destroyAllWindows()

GestureRecognition/HandRecV2.py

@@ -0,0 +1,49 @@
+# -*- coding: utf-8 -*-
+"""
+Created on Thu Nov 22 09:21:04 2018
+
+@author: pivatom
+"""
+
+import numpy as np
+import cv2
+
+min_seg_threshold = 1.05
+max_seg_threshold = 4
+
+def calcSkinSample(event, x, y, flags, param):
+    if event == cv2.EVENT_FLAG_LBUTTON:
+        sample = img[x:x+10, y:y+10]
+        min = 255
+        max = 0
+        for line in sample:
+            avg = np.sum(line)/10
+            if avg < min:
+                min = avg
+            if avg > max:
+                max = avg
+        min_seg_threshold = min
+        max_seg_threshold = max
+
+def draw_rect(event, x, y, flags, param):
+    if event == cv2.EVENT_FLAG_LBUTTON:
+        print("LbuttonClick")
+        cv2.rectangle(img, (x,y), (x+10, y+10), (0,0,255), 3)
+
+img = cv2.imread('H:\car\GestureRecognition\IMG_0818.png', 1)
+
+# Downscale the image
+img = cv2.resize(img, None, fx=0.1, fy=0.1, interpolation = cv2.INTER_AREA)
+
+cv2.namedWindow("Hand")
+cv2.setMouseCallback("Hand", draw_rect)
+
+# prevent divide by zero, by just forcing pixel to be ignored.
+#np.where(img[:,:,1] == 0, 0, img[:,:,1])
+#img[(img[:,:,2]/img[:,:,1] > min_seg_threshold) & (img[:,:,2]/img[:,:,1] < max_seg_threshold)] = [255,255,255]
+
+while(1):
+    cv2.imshow("Hand", img)
+    if cv2.waitKey(0):
+        break
+cv2.destroyAllWindows()

GestureRecognition/HandRecognition.py

@@ -1,15 +1,34 @@
-from PIL import Image
-from PIL import ImageDraw
+import numpy as np
+import cv2
 
-img = Image.open('/Users/piv/Desktop/IMG_0818.png')
+img = cv2.imread('H:\car\GestureRecognition\IMG_0818.png', 1)
 
-# Create a new image of the cutout.
-blkimg = Image.new('1', (img.width, img.height)
-blkdraw = ImageDraw.Draw(blkimg)
+# Downscale the image
+img = cv2.resize(img, None, fx=0.1, fy=0.1, interpolation = cv2.INTER_AREA)
 
-for i in range(1, img.width):
-	for j in range(1, img.height):
-		# getpixel returns tuple (r,g,b,a)
-		pixel = img.getpixel((i, j))
-		if (pixel[0]/pixel[1]) > 1.05 and (pixel[0]/pixel[1]) < 4:
+min_seg_threshold = 1.2
+max_seg_threshold = 1.8
 
+# prevent divide by zero, by just forcing pixel to be ignored.
+np.where(img[:,:,1] == 0, 0, img[:,:,1])
+img[(img[:,:,2]/img[:,:,1] > min_seg_threshold) & (img[:,:,2]/img[:,:,1] < max_seg_threshold)] = [255,255,255]
+
+# Try removing image noise.
+#img = cv2.fastNlMeansDenoising(img)
+
+cv2.imshow('image', img)
+cv2.waitKey(0)
+cv2.destroyAllWindows()
+
+# Remove non-hand parts
+
+# Find centre of the hand
+# Hand parts are white pixels.
+# Find sum of each col/row to find the left/rightmost and top/bottommost white pixels.
+# Have used a for loop but obviously that is going to be slow.
+
+# Draw appropriate circle
+
+# Calculate number of different peaks.
+# Article just traced around the circle and counted number of times switched from
+# zero to one.