[libcamera-devel] [PATCH 2/6] utils: libtuning: modules: lsc: Add debug plot function
Paul Elder
paul.elder at ideasonboard.com
Thu Nov 24 12:38:45 CET 2022
Add a helper function to the base LSC class for plotting an LSC table.
This will be used by LSC specializations for debugging pruposes.
Signed-off-by: Paul Elder <paul.elder at ideasonboard.com>
---
utils/tuning/libtuning/modules/lsc/lsc.py | 31 +++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/utils/tuning/libtuning/modules/lsc/lsc.py b/utils/tuning/libtuning/modules/lsc/lsc.py
index f54ca8be..4d580ad4 100644
--- a/utils/tuning/libtuning/modules/lsc/lsc.py
+++ b/utils/tuning/libtuning/modules/lsc/lsc.py
@@ -8,7 +8,10 @@ from ..module import Module
import libtuning as lt
import libtuning.utils as utils
+import matplotlib.pyplot as plt
+from matplotlib import cm
import numpy as np
+from pathlib import Path
class LSC(Module):
@@ -67,3 +70,31 @@ class LSC(Module):
table = table / np.min(table)
return table, grid
+
+ def _plot_single_lsc(self, image: lt.Image, cr: np.array, cb: np.array,
+ cg1: np.array, cg2: np.array = None):
+ hf = plt.figure(figsize=(8, 8))
+ # Y is plotted as -Y so plot has same axes as image
+ X, Y = np.meshgrid(range(self.sector_shape[0]), range(self.sector_shape[1]))
+
+ ha = hf.add_subplot(221 if cg2 is not None else 311, projection='3d')
+ ha.plot_surface(X, -Y, cr, cmap=cm.coolwarm, linewidth=0)
+ ha.set_title(f'{self.hr_name} Plot\nImage: {image.name}\n\ncr')
+
+ hb = hf.add_subplot(222 if cg2 is not None else 312, projection='3d')
+ hb.plot_surface(X, -Y, cb, cmap=cm.coolwarm, linewidth=0)
+ hb.set_title('cb')
+
+ hc = hf.add_subplot(223 if cg2 is not None else 313, projection='3d')
+ hc.plot_surface(X, -Y, cg1, cmap=cm.coolwarm, linewidth=0)
+ hc.set_title('gr' if cg2 is not None else 'g')
+
+ if cg2 is not None:
+ hd = hf.add_subplot(224, projection='3d')
+ hd.plot_surface(X, -Y, cg2, cmap=cm.coolwarm, linewidth=0)
+ hd.set_title('gb')
+
+ # The caller will validate self.debug (there's no sense in calling this
+ # function if self.debug is None anyway)
+ fname = self.debug / f"{image.name.split('.')[0]}-lsc.png"
+ plt.savefig(fname)
--
2.35.1
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