Plant Phenomics / 2020 / Article / Tab 2

Research Article

Global Wheat Head Detection (GWHD) Dataset: A Large and Diverse Dataset of High-Resolution RGB-Labelled Images to Develop and Benchmark Wheat Head Detection Methods

Table 2

Image characteristics of the sub-datasets comprising the GWHD dataset. All cameras looked vertically downward.

Sub-dataset nameVectorCameraFocal length (mm)Field of view (°)Shooting modeImage size (pixels)Distance to ground (m)GSD (mm/px)

UTokyo_1CartCanon PowerShot G9 X mark II1038.15Automatic1.80.43
UTokyo_2HandheldOlympus μ850 & Sony DSC-HX90V7/445.5Automatic & 1.70.6
Arvalis_1HandheldSony alpha ILCE-600050 & 607.1Automatic2.90.10-0.16
Arvalis_2HandheldSony RX07.79.99Automatic1.80.56
Arvalis_3HandheldSony RX07.79.99Automatic1.80.56
INRAE_1HandheldSony RX07.79.99Automatic1.80.56
USask_1MinivehicleFLIR Chameleon3 USB31619.8Fixed20.45
RRes_1GantryProsilica GT 3300 Allied Vision5012.8Automatic3-3.5§0.33-0.385
ETHZ_1GantryCanon EOS 5D mark II3532.2Fixed30.55
NAU_1HandheldSony RX02416.9Automatic20.21
UQ_1HandheldCanon 550D5517.3Automatic20.2

The field of view is measured diagonally. The reported measure is the half-angle. Original images were cropped, and a subimage of size was extracted from the central area. §The camera was positioned perpendicular to the ground and automatically adjusted to ensure a 2.2 m distance was maintained between the camera and canopy.