This could be used to provide information on soil properties
while in the field, using relatively simple observations and standard
computer equipment. The ability to carry out cheap and rapid soil
assessments would be improved if more accurate evaluations of some
parameters (e.g. P and K) were possible, which may be achievable with
a larger training dataset. However, the parameters that can be accurately
assessed (C, N and texture) would provide important information
regarding organic matter content and composition, and therefore
allow characterisation of soil ecosystemservice provision capability
(e.g. carbon sequestration, water holding capacity, productivity).
CIELab colour was found to be a slightly better overall predictor of soil
characteristics than RGB, but this is balanced against the ease of use of
RGB when dealing with digital image colour and visualisation using
computer equipment. The benefits of CIELab over RGB are not therefore
considered strong enough to argue for its use in deriving soil chemical
composition instead of RGB.
Table
This could be used to provide information on soil properties
while in the field, using relatively simple observations and standard
computer equipment. The ability to carry out cheap and rapid soil
assessments would be improved if more accurate evaluations of some
parameters (e.g. P and K) were possible, which may be achievable with
a larger training dataset. However, the parameters that can be accurately
assessed (C, N and texture) would provide important information
regarding organic matter content and composition, and therefore
allow characterisation of soil ecosystemservice provision capability
(e.g. carbon sequestration, water holding capacity, productivity).
CIELab colour was found to be a slightly better overall predictor of soil
characteristics than RGB, but this is balanced against the ease of use of
RGB when dealing with digital image colour and visualisation using
computer equipment. The benefits of CIELab over RGB are not therefore
considered strong enough to argue for its use in deriving soil chemical
composition instead of RGB.
Table
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