Imscope

ImScope is an experimental false-color image processing tool designed to assess plant health indicators through a range of commonly used filters and indexes. It is important to note that the near-infrared (NIR) data used in these calculations is not directly captured by standard smartphone or tablet cameras, as these devices typically include filters that block infrared light. Instead, NIR values are estimated based on visible color data and saturation, making the tool most effective for analyzing leaves under direct sunlight.

The application offers several visualization modes:

NIR Monochrome: This mode displays a grayscale representation where brightness corresponds to the estimated near-infrared reflectance.

NRG Mode: A transposed color mode where red represents estimated NIR, green corresponds to captured red, and blue corresponds to captured green. This effectively converts the image into an NRG > RGB representation.

NGB Mode: In this mode, red corresponds to estimated NIR, while green and blue remain unchanged from the original image, producing an NGB > RGB output.

ABS Mode: This mode aims to show the proportion of red and blue light absorbed by the object. A displacement bar allows users to mix grayscale into the image for better context. It is particularly useful for examining chlorophyll absorption characteristics.

Additionally, ImScope includes indexed modes that use a slider to select a coefficient between 0 and 1. In these modes:

• Red indicates areas where the index value is very close to the selected value.
• Green represents areas where the value is approximately 0.2 less than the selected value.
• Blue shows areas where the value is roughly 0.3 less.
• All other areas are displayed in grayscale.

This feature allows users to detect subtle variations in plant health across different regions of an image.

The tool supports several vegetation indexes:

• NDVI: (NIR - Red) / (NIR + Red)
• VIGreen: (Green - Red) / (Green + Red)
• VARI: (Green - Red) / (Green + Red - Blue)
• GRI: Green% - Red% (relative difference between green and red)
• GBI: Green% - Blue% (relative difference between green and blue)
• GI: GRI + GBI (sum of the above relative differences)

For more detailed information, visit: http://www.idoneos.com/procesamiento_de_imagenes/imscope/imscope_(english).html