opencv assertion_error ai_generated true

cv::error: (-215:断言失败) !nms_iou_threshold.empty() && nms_iou_threshold > 0 && nms_iou_threshold <= 1 在函数 'NMSBoxes' 中

cv::error: (-215:Assertion failed) !nms_iou_threshold.empty() && nms_iou_threshold > 0 && nms_iou_threshold <= 1 in function 'NMSBoxes'

ID: opencv/dnn-softnms-parameter-error

其他格式: JSON · Markdown 中文 · English
88%修复率
85%置信度
1证据数
2023-03-15首次发现

版本兼容性

版本状态引入弃用备注
4.5.5 active — — —
4.6.0 active — — —
4.7.0 active — — —
4.8.1 active — — —
4.9.0 active — — —

根因分析

非极大值抑制 (NMS) 调用时使用了无效或超出范围的 IoU 阈值参数。

English

Non-maximum suppression (NMS) called with an invalid or out-of-range IoU threshold parameter.

generic

官方文档

https://docs.opencv.org/4.x/d6/d0f/group__dnn.html

解决方案

  1. Ensure nms_iou_threshold is a float between 0.01 and 1.0, e.g., cv::NMSBoxes(boxes, scores, 0.5, 0.4) where 0.4 is the IoU threshold.
  2. Validate the parameter before calling NMSBoxes: if (iou_threshold <= 0.0 || iou_threshold > 1.0) { iou_threshold = 0.5; }

无效尝试

常见但无效的做法:

  1. Setting nms_iou_threshold to 0 to disable NMS 95% 失败

    IoU threshold must be strictly greater than 0; 0 triggers the assertion.

  2. Using a negative value like -0.5 for aggressive suppression 100% 失败

    Negative values fail the '> 0' check in the assertion.

  3. Passing a string or list instead of a float 80% 失败

    The empty() check on a non-scalar type passes, but the comparison fails with type error.