手写数字识别的GUI界面设计
时间: 2023-11-30 14:32:07 浏览: 82
手写数字识别的GUI界面可以包括以下组件:
1. 画板:用于输入手写数字;
2. 识别按钮:点击后对输入的手写数字进行识别;
3. 清空按钮:点击后清空画板;
4. 显示框:用于显示识别结果。
以下是一个简单的Python代码示例,可以用PyQt库实现:
```python
import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QWidget, QPushButton, QLabel, QVBoxLayout
from PyQt5.QtGui import QPixmap, QPainter, QPen
from PyQt5.QtCore import Qt, QPoint, QRectF
from PIL import Image, ImageQt
import numpy as np
import tensorflow as tf
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
self.setWindowTitle("手写数字识别")
self.setFixedSize(400, 500)
# 画板
self.widget = PaintWidget(self)
self.widget.setGeometry(50, 50, 300, 300)
# 识别按钮
self.btn_recognize = QPushButton("识别", self)
self.btn_recognize.setGeometry(100, 380, 80, 40)
self.btn_recognize.clicked.connect(self.recognize)
# 清空按钮
self.btn_clear = QPushButton("清空", self)
self.btn_clear.setGeometry(220, 380, 80, 40)
self.btn_clear.clicked.connect(self.clear)
# 显示框
self.label_result = QLabel(self)
self.label_result.setGeometry(100, 430, 200, 40)
self.label_result.setAlignment(Qt.AlignCenter)
self.label_result.setStyleSheet("font-size: 20px;")
def recognize(self):
# 将画板上的手写数字转换为输入数据
img = self.widget.get_image()
img = img.resize((28, 28))
img = img.convert("L")
img_array = np.array(img)
img_array = img_array.reshape((1, 28, 28, 1))
img_array = img_array / 255.0
# 加载模型
model = tf.keras.models.load_model("model.h5")
# 进行识别
result = model.predict(img_array)
digit = np.argmax(result)
# 更新显示框
self.label_result.setText(str(digit))
def clear(self):
self.widget.clear()
class PaintWidget(QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.setFixedSize(300, 300)
self.image = Image.new("RGB", (300, 300), (255, 255, 255))
self.drawing = False
self.last_point = None
def paintEvent(self, event):
painter = QPainter(self)
painter.drawImage(event.rect(), ImageQt.ImageQt(self.image))
def mousePressEvent(self, event):
self.drawing = True
self.last_point = event.pos()
def mouseMoveEvent(self, event):
if self.drawing:
painter = QPainter(self.image)
painter.setPen(QPen(Qt.black, 20, Qt.SolidLine))
painter.drawLine(self.last_point, event.pos())
self.last_point = event.pos()
self.update()
def mouseReleaseEvent(self, event):
self.drawing = False
def clear(self):
self.image = Image.new("RGB", (300, 300), (255, 255, 255))
self.update()
def get_image(self):
return self.image.convert("L").transpose(Image.FLIP_TOP_BOTTOM)
if __name__ == '__main__':
app = QApplication(sys.argv)
main_window = MainWindow()
main_window.show()
sys.exit(app.exec_())
```
该代码实现了一个简单的手写数字识别GUI界面,其中包括一个画板、一个识别按钮、一个清空按钮和一个显示框。用户可以在画板上输入手写数字,然后点击识别按钮进行识别,识别结果会显示在显示框中。
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