# Could not collect images for labeling and training

**URL:** <https://forum.opencv.org/t/could-not-collect-images-for-labeling-and-training/1728>\
**Category:** Python\
**Created:** [February 23, 2021, 8:58am UTC](https://forum.opencv.org/t/could-not-collect-images-for-labeling-and-training/1728 "2021-02-23T08:58:54Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![crackwitz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/crackwitz/32/14_2.png) [@crackwitz](https://forum.opencv.org/u/crackwitz)\
**Post date:** [September 5, 2023, 10:01pm UTC](https://forum.opencv.org/t/could-not-collect-images-for-labeling-and-training/1728/8 "2023-09-05T22:01:17Z")

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A post was split to a new topic: [!\_img.empty() in function ‘cv::imwrite’, (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support](https://forum.opencv.org/t/img-empty-in-function-cv-imwrite-2-unspecified-error-the-function-is-not-implemented-rebuild-the-library-with-windows-gtk-2-x-or-cocoa-support/14449)

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