diff options
| -rwxr-xr-x | utils/raspberrypi/ctt/ctt.py | 8 | ||||
| -rw-r--r-- | utils/raspberrypi/ctt/ctt_alsc.py | 12 | ||||
| -rw-r--r-- | utils/raspberrypi/ctt/ctt_config_example.json | 5 |
3 files changed, 16 insertions, 9 deletions
diff --git a/utils/raspberrypi/ctt/ctt.py b/utils/raspberrypi/ctt/ctt.py index 522933bd..96f1b5e6 100755 --- a/utils/raspberrypi/ctt/ctt.py +++ b/utils/raspberrypi/ctt/ctt.py @@ -269,7 +269,7 @@ class Camera: colour channel seperately, and then partially corrects for vignetting. The extent of the correction depends on the 'luminance_strength' parameter. """ - def alsc_cal(self, luminance_strength, do_alsc_colour, grid_size): + def alsc_cal(self, luminance_strength, do_alsc_colour, grid_size, max_gain=8.0): if 'rpi.alsc' in self.disable: return 1 print('\nStarting ALSC calibration') @@ -292,7 +292,7 @@ class Camera: call calibration function """ plot = "rpi.alsc" in self.plot - alsc_out = alsc_all(self, do_alsc_colour, plot, grid_size) + alsc_out = alsc_all(self, do_alsc_colour, plot, grid_size, max_gain=max_gain) cal_cr_list, cal_cb_list, luminance_lut, av_corn = alsc_out """ write output to json and finish if not do_alsc_colour @@ -705,11 +705,13 @@ def run_ctt(json_output, directory, config, log_output, json_template, grid_size alsc_d = get_config(configs, "alsc", {}, 'dict') do_alsc_colour = get_config(alsc_d, "do_alsc_colour", 1, 'bool') luminance_strength = get_config(alsc_d, "luminance_strength", 0.8, 'num') + lsc_max_gain = get_config(alsc_d, "max_gain", 8.0, 'num') blacklevel = get_config(configs, "blacklevel", -1, 'num') macbeth_d = get_config(configs, "macbeth", {}, 'dict') mac_small = get_config(macbeth_d, "small", 0, 'bool') mac_show = get_config(macbeth_d, "show", 0, 'bool') mac_config = (mac_small, mac_show) + print("Read lsc_max_gain", lsc_max_gain) if blacklevel < -1 or blacklevel >= 2**16: print('\nInvalid blacklevel, defaulted to 64') @@ -750,7 +752,7 @@ def run_ctt(json_output, directory, config, log_output, json_template, grid_size Cam.json['rpi.black_level']['black_level'] = Cam.blacklevel_16 Cam.json_remove(disable) print('\nSTARTING CALIBRATIONS') - Cam.alsc_cal(luminance_strength, do_alsc_colour, grid_size) + Cam.alsc_cal(luminance_strength, do_alsc_colour, grid_size, max_gain=lsc_max_gain) Cam.geq_cal() Cam.lux_cal() Cam.noise_cal() diff --git a/utils/raspberrypi/ctt/ctt_alsc.py b/utils/raspberrypi/ctt/ctt_alsc.py index 66ce8c14..1d94dfa5 100644 --- a/utils/raspberrypi/ctt/ctt_alsc.py +++ b/utils/raspberrypi/ctt/ctt_alsc.py @@ -13,7 +13,7 @@ from mpl_toolkits.mplot3d import Axes3D """ preform alsc calibration on a set of images """ -def alsc_all(Cam, do_alsc_colour, plot, grid_size=(16, 12)): +def alsc_all(Cam, do_alsc_colour, plot, grid_size=(16, 12), max_gain=8.0): imgs_alsc = Cam.imgs_alsc grid_w, grid_h = grid_size """ @@ -24,7 +24,7 @@ def alsc_all(Cam, do_alsc_colour, plot, grid_size=(16, 12)): list_cb = [] list_cg = [] for Img in imgs_alsc: - col, cr, cb, cg, size = alsc(Cam, Img, do_alsc_colour, plot, grid_size=grid_size) + col, cr, cb, cg, size = alsc(Cam, Img, do_alsc_colour, plot, grid_size=grid_size, max_gain=max_gain) list_col.append(col) list_cr.append(cr) list_cb.append(cb) @@ -118,7 +118,7 @@ def alsc_all(Cam, do_alsc_colour, plot, grid_size=(16, 12)): """ calculate g/r and g/b for 32x32 points arranged in a grid for a single image """ -def alsc(Cam, Img, do_alsc_colour, plot=False, grid_size=(16, 12)): +def alsc(Cam, Img, do_alsc_colour, plot=False, grid_size=(16, 12), max_gain=8.0): Cam.log += '\nProcessing image: ' + Img.name grid_w, grid_h = grid_size """ @@ -153,9 +153,12 @@ def alsc(Cam, Img, do_alsc_colour, plot=False, grid_size=(16, 12)): median blur to remove peaks and save as float 64 """ cr = cv2.medianBlur(cr, 3).astype('float64') + cr = cr/np.min(cr) # gain tables are easier for humans to read if the minimum is 1.0 cb = cv2.medianBlur(cb, 3).astype('float64') + cb = cb/np.min(cb) cg = cv2.medianBlur(cg, 3).astype('float64') cg = cg/np.min(cg) + cg = [min(v, max_gain) for v in cg.flatten()] # never exceed the max luminance gain """ debugging code showing 2D surface plot of vignetting. Quite useful for @@ -179,7 +182,7 @@ def alsc(Cam, Img, do_alsc_colour, plot=False, grid_size=(16, 12)): # print(Img.str) plt.show() - return Img.col, cr.flatten(), cb.flatten(), cg.flatten(), (w, h, dx, dy) + return Img.col, cr.flatten(), cb.flatten(), cg, (w, h, dx, dy) else: """ @@ -189,6 +192,7 @@ def alsc(Cam, Img, do_alsc_colour, plot=False, grid_size=(16, 12)): cg = np.reshape(1/g, (grid_h, grid_w)).astype('float32') cg = cv2.medianBlur(cg, 3).astype('float64') cg = cg/np.min(cg) + cg = [min(v, max_gain) for v in cg.flatten()] # never exceed the max luminance gain if plot: hf = plt.figure(figssize=(8, 8)) diff --git a/utils/raspberrypi/ctt/ctt_config_example.json b/utils/raspberrypi/ctt/ctt_config_example.json index c7f90761..1105862c 100644 --- a/utils/raspberrypi/ctt/ctt_config_example.json +++ b/utils/raspberrypi/ctt/ctt_config_example.json @@ -3,7 +3,8 @@ "plot": [], "alsc": { "do_alsc_colour": 1, - "luminance_strength": 0.5 + "luminance_strength": 0.8, + "max_gain": 8.0 }, "awb": { "greyworld": 0 @@ -13,4 +14,4 @@ "small": 0, "show": 0 } -}
\ No newline at end of file +} |