Discussion
In FCC, vegetation is seen in red colour because ....................... .
Answer: C
The key's answer is Near infrared is represented as red.
In a standard false colour composite (FCC), the near infrared band is displayed through the red channel, the red band through the green channel and the green band through the blue channel. Healthy vegetation reflects near infrared very strongly, because of the internal structure of the leaf, so it is very bright in the band that has been assigned to red, and therefore appears red on the image.
Vegetation does reflect near infrared, but that alone would not make it look red, since near infrared is invisible; it is the assignment of that band to red that produces the colour, which is the point the key takes. Vegetation reflecting green explains why it looks green to the eye and in a true colour image, not in an FCC. 'Red is represented as green' is part of the FCC scheme but explains the colour of other features, not the red of vegetation.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development