Title

Central Highlands - Canopy Height (CHM) 

Time period

2016-01-092016-08-06 

Horizontal Accuracy

0.2m  

Vertical Accuracy

0.2m  

Code

MGA Zone 55 GDA94 

Title

ESRI Ascii 

Topic category

• Elevation

Use limitation

General 

Classification

Unclassified  

Description

The CHM (canopy height above ground) surface was produced by firstly generating a vegetation elevation surface by selecting the highest LiDAR point present on each one metre cell with classification of low, medium, or high vegetation (4, 5, or 6), and assigning elevation. The DEM was subtracted from the vegetation elevation surface to form the CHM. The CHM was exported to ESRI Floating Point grid Ascii as 1km by 1km tiles. 

Classification

Unclassified  

Attribute Quality

Positional Accuracy

Conceptual Consistency

Comments

The data adheres to the logical rules of data structure, attribution and relationships as per project specifications. 

Missing Data

Comments

The project area boundary was flight planned with an additional 100m buffer to ensure full coverage would be obtained, and coverage was reviewed at the end of each days capture. Classification is validated at multiple stop points throughout the processing workflow to ensure classes are correct, coverage is complete and interpolation is minimal in generated surfaces. 

Excess Data

Platform Type

Aerial  

Assembly

Single  

Tile Size

2 km  

Raster Type

Canopy Height Model  

X Pixel Resolution (cm)

1cm  

Y Pixel Resolution (cm)

1cm  

Seamlessness

Full  

Number of Bands

0 

Band List

1  

Resampling Kernel

Bilinear  

Rectification Type

Orthorectified  

Platform Name

Fixed Wing Aircraft