utils: raspberrypi: ctt: Fix pycodestyle E231

E231 missing whitespace after ','
E231 missing whitespace after ':'

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>

utils/raspberrypi/ctt/ctt_geq.py

@@ -13,25 +13,25 @@ Uses green differences in macbeth patches to fit green equalisation threshold
 model. Ideally, all macbeth chart centres would fall below the threshold as
 these should be corrected by geq.
 """
-def geq_fit(Cam,plot):
+def geq_fit(Cam, plot):
     imgs = Cam.imgs
     """
     green equalisation to mitigate mazing.
     Fits geq model by looking at difference
     between greens in macbeth patches
     """
-    geqs = np.array([ geq(Cam,Img)*Img.againQ8_norm for Img in imgs ])
+    geqs = np.array([ geq(Cam, Img)*Img.againQ8_norm for Img in imgs ])
     Cam.log += '\nProcessed all images'
-    geqs = geqs.reshape((-1,2))
+    geqs = geqs.reshape((-1, 2))
     """
     data is sorted by green difference and top half is selected since higher
     green difference data define the decision boundary.
     """
-    geqs = np.array(sorted(geqs,key = lambda r:np.abs((r[1]-r[0])/r[0])))
+    geqs = np.array(sorted(geqs, key = lambda r: np.abs((r[1]-r[0])/r[0])))
 
     length = len(geqs)
-    g0 = geqs[length//2:,0]
-    g1 = geqs[length//2:,1]
+    g0 = geqs[length//2:, 0]
+    g1 = geqs[length//2:, 1]
     gdiff = np.abs(g0-g1)
     """
     find linear fit by minimising asymmetric least square errors
@@ -40,7 +40,7 @@ def geq_fit(Cam,plot):
     threshold, hence the upper bound approach
     """
     def f(params):
-        m,c = params
+        m, c = params
         a = gdiff - (m*g0+c)
         """
         asymmetric square error returns:
@@ -49,29 +49,29 @@ def geq_fit(Cam,plot):
         """
         return(np.sum(a**2+0.95*np.abs(a)*a))
 
-    initial_guess = [0.01,500]
+    initial_guess = [0.01, 500]
     """
     Nelder-Mead is usually not the most desirable optimisation method
     but has been chosen here due to its robustness to undifferentiability
     (is that a word?)
     """
-    result = optimize.minimize(f,initial_guess,method='Nelder-Mead')
+    result = optimize.minimize(f, initial_guess, method='Nelder-Mead')
     """
     need to check if the fit worked correectly
     """
     if result.success:
-        slope,offset = result.x
+        slope, offset = result.x
         Cam.log += '\nFit result: slope = {:.5f} '.format(slope)
         Cam.log += 'offset = {}'.format(int(offset))
         """
         optional plotting code
         """
         if plot:
-            x = np.linspace(max(g0)*1.1,100)
+            x = np.linspace(max(g0)*1.1, 100)
             y = slope*x + offset
             plt.title('GEQ Asymmetric \'Upper Bound\' Fit')
-            plt.plot(x,y,color='red',ls='--',label='fit')
-            plt.scatter(g0,gdiff,color='b',label='data')
+            plt.plot(x, y, color='red', ls='--', label='fit')
+            plt.scatter(g0, gdiff, color='b', label='data')
             plt.ylabel('Difference in green channels')
             plt.xlabel('Green value')
 
@@ -103,7 +103,7 @@ def geq_fit(Cam,plot):
         """
         if plot:
             y2 = slope*x + offset
-            plt.plot(x,y2,color='green',ls='--',label='scaled fit')
+            plt.plot(x, y2, color='green', ls='--', label='scaled fit')
             plt.grid()
             plt.legend()
             plt.show()
@@ -122,19 +122,19 @@ def geq_fit(Cam,plot):
         print(result.message)
         Cam.log += '\nWARNING: Asymmetric least squares fit failed! '
         Cam.log += 'Standard fit used could possibly lead to worse results'
-        fit = np.polyfit(gdiff,g0,1)
-        offset,slope = -fit[1]/fit[0],1/fit[0]
+        fit = np.polyfit(gdiff, g0, 1)
+        offset, slope = -fit[1]/fit[0], 1/fit[0]
         Cam.log += '\nFit result: slope = {:.5f} '.format(slope)
         Cam.log += 'offset = {}'.format(int(offset))
         """
         optional plotting code
         """
         if plot:
-            x = np.linspace(max(g0)*1.1,100)
+            x = np.linspace(max(g0)*1.1, 100)
             y = slope*x + offset
             plt.title('GEQ Linear Fit')
-            plt.plot(x,y,color='red',ls='--',label='fit')
-            plt.scatter(g0,gdiff,color='b',label='data')
+            plt.plot(x, y, color='red', ls='--', label='fit')
+            plt.scatter(g0, gdiff, color='b', label='data')
             plt.ylabel('Difference in green channels')
             plt.xlabel('Green value')
         """
@@ -158,22 +158,22 @@ def geq_fit(Cam,plot):
         """
         if plot:
             y2 = slope*x + offset
-            plt.plot(x,y2,color='green',ls='--',label='scaled fit')
+            plt.plot(x, y2, color='green', ls='--', label='scaled fit')
             plt.legend()
             plt.grid()
             plt.show()
 
-    return round(slope,5),int(offset)
+    return round(slope, 5), int(offset)
 
 """"
 Return green channels of macbeth patches
-returns g0,g1 where
+returns g0, g1 where
 > g0 is green next to red
 > g1 is green next to blue
 """
-def geq(Cam,Img):
+def geq(Cam, Img):
     Cam.log += '\nProcessing image {}'.format(Img.name)
     patches = [Img.patches[i] for i in Img.order][1:3]
-    g_patches = np.array([(np.mean(patches[0][i]),np.mean(patches[1][i])) for i in range(24)])
+    g_patches = np.array([(np.mean(patches[0][i]), np.mean(patches[1][i])) for i in range(24)])
     Cam.log += '\n'
     return(g_patches)