DEVELOPMENT OF A DYE DETECTION SYSTEM CONCENTRATION IN WATER USING DIGITAL IMAGES

Resumo

This study aims to detect dyes at different concentrations and diluted in water using RGB digital images
captured with a webcam dispositive. This detection is a low-cost alternative for the spectrophotometer, an
equipment consolidated for this type of application. From the captured images, it was cut areas with 40x100 pixels
and the average value for these pixels were used during the image’s process, creating 4 types of models. It
compared these models results with the obtained ones by the spectrophotometer. The greater result obtained by
the logarithm model referred to the R band normalized with a quadratic approximation, presenting a correlation
coefficient of 0.9912. Therefore, it concluded that the use of this technology has the potential to detect different
dye concentrations with the spectrophotometer backing.