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HNB enhance

Automatic image enhancement for Hydroxy naphthol blue (HNB) dyes.

Color Stretch

In a Hue-Saturation-Lightness colorspace, the color of each pixel will be stretched in hue to emphasize the colors of HNB and increased 4x in saturation. This increases the perceptual ability to distinguish positive vs negative outcomes of SARS-CoV-2 tests using an isothermal LAMP reaction with HNB (Hydroxy naphthol blue) dye.

Color Rotate

In a Hue-Saturation-Lightness colorspace, the color of each pixel will be increased 4x in saturation and rotated 180 degrees in Hue. Kellner et al. (2020) found that this increases the perceptual ability to distinguish positive vs negative outcomes of SARS-CoV-2 tests using an isothermal LAMP reaction with HNB (Hydroxy naphthol blue) dye.

1Choose an image file.

Drag a file here or select an image.

2View the original, Color Stretched and Color Rotated images.

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