实战 | Halcon实例转OpenCV实现-复杂背景下OCR数字识别

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导读

本文主要介绍一个复杂背景下OCR数字提取识别实例，并将Halcon实现转为OpenCV。

实例来源

Halcon例程ocrcolor.hdev，例程代码精简修改如下：

* Author: Color Space              * 来源-公众号：OpenCV与AI深度学习              *--------------------------------              dev_get_window (WindowHandle)              read_image (Image, '5.png')              decompose3 (Image, R, G, B)              trans_from_rgb (R, G, B, H, S, V, 'hsv')              threshold (B, Regions, 0, 240)              dilation_circle (Regions, RegionDilation, 4.5)              connection (RegionDilation, ConnectedRegions)              dev_display (Image)              select_shape (ConnectedRegions, SelectedRegions, ['width','height'], 'and', [25.86,80.71], [67.84,138.51])              sort_region(SelectedR