The real issue with all of these techniques remains: you can't add the indices later on.
所有这些技术的真正问题依然在于：您不能在以后添加索引。
The capabilities of these vegetation indices derived from all kinds of combinations of red, green and blue bands to LAI estimation were compared. GNDVI and GBNDVI have the best relation with LAI.
综合比较所有由红绿蓝光波段各种组合构成的植被指数对LAI的估算能力，认为GNDVI和GBNDVI与LAI有比较好的关系。
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