From 23993a010c2976bc2a0fc1e656cf249b1a68ea4c Mon Sep 17 00:00:00 2001 From: michal-pluta Date: Thu, 10 Jan 2019 08:30:42 +0100 Subject: [PATCH] Add files via upload --- aprox-error/aprox-error.py | 42 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 aprox-error/aprox-error.py diff --git a/aprox-error/aprox-error.py b/aprox-error/aprox-error.py new file mode 100644 index 0000000..1bb77d1 --- /dev/null +++ b/aprox-error/aprox-error.py @@ -0,0 +1,42 @@ +import networkx as nx + +from typing import Tuple + +# Zad14 +# Author: Michał Pluta + +class AproxError: + def __init__(self, BITMAP_R, BITMAP_G, BITMAP_B): + for px in [x1, x2]: + for py in [y1, y2]: + self.DIFF_R[px][py] = BITMAP_R[px][py]; + self.DIFF_G[px][py] = BITMAP_G[px][py]; + self.DIFF_B[px][py] = BITMAP_B[px][py]; + + def aprox_err(self, x1: int, y1: int, x2: int, y2: int, rgb1: Tuple[int, int, int], rgb2: Tuple[int, int, int], rgb3: Tuple[int, int, int], rgb4: Tuple[int, int, int]): + def update_diffs(x: int, y: int, mul: float, rgb: Tuple[int, int, int]): + self.DIFF_R[x][y] -= rgb[0] * mul + self.DIFF_G[x][y] -= rgb[1] * mul + self.DIFF_B[x][y] -= rgb[2] * mul + + for px in [x1, x2]: + for py in [y1, y2]: + px1 = (px - x1) / (x2 - x1) + py1 = (py - y1) / (y2 - y1) + + mul1 = (1.0 - px1) * py1 + update_diffs(px, py, mul1, rgb1) + + mul2 = px1 * py1 + update_diffs(px, py, mul2, rgb2) + + mul3 = (1.0 - px1) * (1.0 - py1) + update_diffs(px, py, mul3, rgb3) + + mul4 = px1 * (1.0 - py1) + update_diffs(px, py, mul4, rgb4) + + self.ERROR = 0 + for px in [x1, x2] + for py in [y1, y2] + self.ERROR += 0.5*(DIFF_R[px][py])^2+0.3*(DIFF_G[px][py])^2+0.2*(DIFF_B[px][py])^2