libtuning: Fix imports

Fix imports to match new structure in the files copied from Raspberry
Pi. Add missing imports in macbeth.py. Add missing dependencies to
requirements.txt.

Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>

utils/tuning/libtuning/ctt_awb.py

@@ -4,10 +4,12 @@
 #
 # camera tuning tool for AWB
 
-from ctt_image_load import *
 import matplotlib.pyplot as plt
 from bisect import bisect_left
 from scipy.optimize import fmin
+import numpy as np
+
+from .image import Image
 
 
 """

utils/tuning/libtuning/ctt_ccm.py

@@ -4,12 +4,14 @@
 #
 # camera tuning tool for CCM (colour correction matrix)
 
-from ctt_image_load import *
-from ctt_awb import get_alsc_patches
-import colors
-from scipy.optimize import minimize
-from ctt_visualise import visualise_macbeth_chart
 import numpy as np
+from scipy.optimize import minimize
+
+from . import ctt_colors as colors
+from .image import Image
+from .ctt_awb import get_alsc_patches
+from .utils import visualise_macbeth_chart
+
 """
 takes 8-bit macbeth chart values, degammas and returns 16 bit
 """

utils/tuning/libtuning/macbeth.py

@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: BSD-2-Clause
 #
 # Copyright (C) 2019, Raspberry Pi Ltd
+# Copyright (C) 2024, Ideas on Board Oy
 #
 # Locate and extract Macbeth charts from images
 # (Copied from: ctt_macbeth_locator.py)
@@ -11,6 +12,10 @@ import cv2
 import os
 from pathlib import Path
 import numpy as np
+import warnings
+from sklearn import cluster as cluster
+
+from .ctt_ransac import get_square_verts, get_square_centres
 
 from libtuning.image import Image
 

utils/tuning/requirements.txt

@@ -1,5 +1,8 @@
+matplotlib
 numpy
 opencv-python
 py3exiv2
 pyyaml
 rawpy
+scikit-learn
+scipy