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AgricultureBounding Box

Thistle Detection

Bounding boxes locating thistle plants in drone field imagery, told apart from crops, grass and other weeds.

SAMPLE PENDING

Sample frames for this project are available under NDA. Write to bilal@wortel.ai and we will share the relevant before and after pairs.

Challenges

  • Differentiating thistle from other weeds and surrounding vegetation.
  • Small plants in dense agricultural fields were difficult to detect.
  • Partially visible or overlapping plants complicated box placement.
  • Different growth stages produced wide variation in plant size and appearance.
  • Complex field backgrounds made plant identification harder.
  • Similar-looking vegetation occasionally made class identification difficult.
  • Varying lighting conditions and shadows affected plant visibility.
  • Keeping bounding boxes tight around irregularly shaped plants required careful attention to detail.

Related work

Ground Cover Quadrat Segmentation - annotation sample

Ground Cover Quadrat Segmentation

2,275 cover-crop plot images annotated in Labelbox: plot corners boxed, then every pixel classed as groundcover, weed, residue, crop or soil.

SAMPLE PENDING

Almond Tree Detection

Bounding boxes around individual almond trees in top-down drone imagery, where shadows and neighbouring vegetation mimicked real trees.

SAMPLE PENDING

Apple Detection

Bounding boxes around individual apples on tree branches, where dense leaves and occlusion hid much of each fruit.