local variable 'pre_nms_class_ids' referenced before assignment

This error occurs when a local variable is used or referenced before it has been assigned a value.

To resolve this error, make sure that the variable is properly initialized before it is used. Check for any typos or misspellings in the variable name that could be causing the issue. Also, ensure that the variable is declared within the correct scope where it is being used.

If you are still having trouble, try debugging your code by adding print statements or using a debugger to step through your program and identify where the variable is being used before it is assigned a value.

相关问题

pre_nms_num

pre_nms_num是指在目标检测算法中，在应用非极大值抑制（NMS）之前，保留的候选框的数量。NMS是一种常用的技术，用于减少重叠的候选框，从而提高目标检测算法的准确性和效率。pre_nms_num的设定可以影响最终输出的候选框数量，较高的值可能会导致更多的候选框被保留，但也可能增加计算时间。具体的数值设置通常需要根据具体应用场景和需求进行调整。

name 'pre_nms_rois' is not defined

This error message means that there is a variable or object named "pre_nms_rois" that is being referenced in the code, but it has not been defined or declared anywhere in the program.

To fix this error, you need to define or declare the "pre_nms_rois" variable before it is used in the code. You may need to check the spelling and ensure that the variable is being used in the correct scope.