Downloads


Brochure


Manual

HemiView Hemispheric Image Analysis System

2008 Model HemiView Camera System

The HemiView V8 system demands that the camera, mounting, stabilization are all integrated into a professional package for field environments. Our years of experience led to the creation of this affordably priced high quality package with the latest in Digital SLR technology.

HemiView is a state-of-the-art program that processes hemispherical images to provide information about plant canopy geometry and sky obstruction.

Photographs are taken looking upwards from beneath the plant canopy, or from the forest floor, using a 180° fish-eye lens and digital camera. Lighting conditions with uniform sky illumination are required, such as an overcast sky, or just before sunrise or after sunset. The camera is mounted in a self-leveling mount, which holds the camera level at whatever the mounting angle. It also provides reflective markers for the North-South axis, both essential to accurate alignment of the image later.

HEMI-DC Includes

HemiView Canopy System V8. Complete system including Software, SD14 Digital Camera, 18-200 mm zoom and 4.5 mm Fisheye lenses. Digital 14 mPix, USB kit, Charger, Battery, Photo pro S/W, 4 GB Flash Mem, Bogen Pro 3-D Camera mount, Bogen 89“ Professional Tripod, 6 leveling indicia, camera and tripod case.

Items are stocked as a kit and not quotable or sold separately.

Features

  • IBM PC-AT or compatible with 486DX 50MHz processor or faster
  • 8 MB RAM minimum, <20MB recommended
  • 10MB free disk space for program, high capacity storage for
    images
  • 16 color VGA minimum, hardware accelerated super
    VGA recommended
  • Microsoft Windows 3.11 or Windows 95/NT (recommended)
  • CD-ROM drive recommended
Specifications

Image file types supported:
BMP, JPEG, PCX, TIFF, Targa, PhotoCD

Image resolutions:
Minimum practical 512 x 512 maximum limited by hardware resources

Lens distortion:
Can be specified as polynomial relating zenith angle and radial distance

Direct light model:
Simple atmospheric transmission, or user defined

Diffuse light model:
Uniform or Standard overcast sky, or user defines.

Data output:
Excel 5.0 compatible spreadsheet built in

Parameters calculated
include Indirect Site Factor (ISF), Direct Site Factor (DSF), Leaf Area Index (LAI), gap fraction. These are available as integrated values, or tabulated by image sector and time