prescan7中使用lens map exr文件去畸变的代码是什么
时间: 2024-03-20 22:43:42 浏览: 73
PreScan中文论文.7z
Prescan 7中使用Lens Map EXR文件去畸变的代码如下(使用OpenCV库):
```python
import cv2
import numpy as np
def undistort_image_with_map(image, map_file):
# 读取畸变映射表
mapx = cv2.imread(map_file, cv2.IMREAD_GRAYSCALE | cv2.IMREAD_ANYDEPTH)
mapy = np.zeros_like(mapx)
# 生成网格坐标
h, w = mapx.shape[:2]
grid_x, grid_y = np.meshgrid(np.arange(w), np.arange(h))
# 对网格坐标进行畸变校正
grid_x_corrected = grid_x + (grid_x - w / 2) * mapx
grid_y_corrected = grid_y + (grid_y - h / 2) * mapy
# 应用畸变校正后的网格坐标进行图像重采样
undistorted_image = cv2.remap(image, grid_x_corrected, grid_y_corrected, cv2.INTER_LINEAR)
return undistorted_image
```
其中,image为待去畸变的图像,map_file为Lens Map EXR文件路径。函数返回去畸变后的图像。Prescan 7中Lens Map EXR文件包含x和y方向的畸变信息,因此需要同时生成x和y方向的映射表。函数中使用网格坐标进行畸变校正,并最终通过重采样实现图像去畸变。
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