54 lines
1.9 KiB
Python
54 lines
1.9 KiB
Python
import numpy as np
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import cv2
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from PyQt6.QtWidgets import QVBoxLayout, QLabel, QSlider
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from PyQt6.QtCore import Qt
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from .ImageParameterDialog import ImageParameterDialog
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import ImageProcessingWorker
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class BrightnessContrastDialog(ImageParameterDialog):
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def __init__(self, image):
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super().__init__(image, ImageProcessingWorker.RGBImageProcessingWorker)
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self.setWindowTitle("Brightness/Contrast Adjustment")
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self.layout = QVBoxLayout()
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self.brightness_slider = QSlider(Qt.Orientation.Horizontal)
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self.brightness_slider.setRange(-127, 127)
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self.contrast_slider = QSlider(Qt.Orientation.Horizontal)
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self.contrast_slider.setRange(-127, 127)
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self.label1 = QLabel("Brightness: 0")
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self.label2 = QLabel("Contrast: 0")
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self.brightness_slider.valueChanged.connect(lambda value: self.update(self.label1, value, "Brightness"))
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self.contrast_slider.valueChanged.connect(lambda value: self.update(self.label2, value, "Contrast"))
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self.layout.addWidget(self.label1)
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self.layout.addWidget(self.brightness_slider)
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self.layout.addWidget(self.label2)
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self.layout.addWidget(self.contrast_slider)
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self.layout.addWidget(self.button_box)
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self.setLayout(self.layout)
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def update(self, label, value, slider_name):
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label.setText(f"{slider_name}: {value}")
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self.send_to_process({
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'brightness': self.brightness_slider.value(),
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'contrast': self.contrast_slider.value(),
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})
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def process_image(self, image, values):
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brightness = values.get('brightness', 0.0) + 1
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contrast = values.get('contrast', 0.0) + 1
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c = (259 * (contrast + 255)) / (255 * (259 - contrast))
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scaled = c * (image - 128) + 128 + brightness
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return np.clip(scaled, 0, 255)
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@classmethod
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def dialog_name(cls):
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return "Brightness-Contrast" |