使用OpenCV绘图函数绘制一幅有意境的人物图像 |21xrx.com

使用OpenCV绘图函数绘制一幅有意境的人物图像

2023-10-13 19:48:32 深夜i -- --

OpenCV 绘图函数人物图像有意境

OpenCV是一款功能强大的开源计算机视觉库，提供了丰富的图像处理和计算机视觉算法。其中，绘图函数是OpenCV库的关键部分之一，可以用于绘制各种图像，包括人物图像。下面介绍如何使用OpenCV绘图函数绘制一幅有意境的人物图像。

首先，我们需要创建一个空白的画布，用于绘制人物图像。使用OpenCV库的`cv2.cvtColor()`函数将一个全黑的图像转换为BGR色彩空间，代码如下：


import cv2
import numpy as np
canvas = np.zeros((400, 400, 3), dtype="uint8")
canvas = cv2.cvtColor(canvas, cv2.COLOR_BGR2RGB)

接下来，我们可以使用OpenCV库的绘图函数来绘制人物的不同部分。例如，我们可以使用`cv2.circle()`函数绘制人物的脸，代码如下：


center = (200, 200)
radius = 150
color = (255, 255, 255)
thickness = -1
canvas = cv2.circle(canvas, center, radius, color, thickness)

然后，我们可以使用`cv2.ellipse()`函数来绘制人物的眼睛。代码如下：


center_left_eye = (150, 150)
center_right_eye = (250, 150)
axes = (30, 50)
angle = 0
startAngle = 0
endAngle = 360
color = (0, 0, 0)
thickness = -1
canvas = cv2.ellipse(canvas, center_left_eye, axes, angle, startAngle, endAngle, color, thickness)
canvas = cv2.ellipse(canvas, center_right_eye, axes, angle, startAngle, endAngle, color, thickness)

接着，我们可以使用`cv2.line()`函数来绘制人物的嘴巴。代码如下：


start_point = (150, 250)
end_point = (250, 250)
color = (0, 0, 0)
thickness = 2
canvas = cv2.line(canvas, start_point, end_point, color, thickness)

最后，我们可以使用`cv2.putText()`函数来添加人物的描述文字。代码如下：


text = "An artistic character"
org = (50, 380)
fontFace = cv2.FONT_HERSHEY_SIMPLEX
fontScale = 1.2
color = (0, 0, 0)
thickness = 2
canvas = cv2.putText(canvas, text, org, fontFace, fontScale, color, thickness)

最终，我们完成了一幅有意境的人物图像。完整的代码如下：


import cv2
import numpy as np
canvas = np.zeros((400, 400, 3), dtype="uint8")
canvas = cv2.cvtColor(canvas, cv2.COLOR_BGR2RGB)
center = (200, 200)
radius = 150
color = (255, 255, 255)
thickness = -1
canvas = cv2.circle(canvas, center, radius, color, thickness)
center_left_eye = (150, 150)
center_right_eye = (250, 150)
axes = (30, 50)
angle = 0
startAngle = 0
endAngle = 360
color = (0, 0, 0)
thickness = -1
canvas = cv2.ellipse(canvas, center_left_eye, axes, angle, startAngle, endAngle, color, thickness)
canvas = cv2.ellipse(canvas, center_right_eye, axes, angle, startAngle, endAngle, color, thickness)
start_point = (150, 250)
end_point = (250, 250)
color = (0, 0, 0)
thickness = 2
canvas = cv2.line(canvas, start_point, end_point, color, thickness)
text = "An artistic character"
org = (50, 380)
fontFace = cv2.FONT_HERSHEY_SIMPLEX
fontScale = 1.2
color = (0, 0, 0)
thickness = 2
canvas = cv2.putText(canvas, text, org, fontFace, fontScale, color, thickness)
cv2.imshow("Artistic Character", canvas)
cv2.waitKey(0)
cv2.destroyAllWindows()

通过上述代码，我们成功绘制了一幅有意境的人物图像。使用OpenCV的绘图函数，我们可以发挥无限的想象力，创造出更加有意思和独特的图像。无论是艺术创作还是计算机视觉研究，OpenCV都是一个非常有用的工具。

上一篇: idea打包java可执行jar包

下一篇: 深入理解OpenCV调用摄像头的原理

评论区

()

相似文章