Threshold

Estimated reading: 3 minutes 240 views

Threshold activity is used for increasing or decreasing noise in images.

*Input image	Path file name and extension of the image that will be processed.
*Output image	Path, file name and extension of the image that is processed.
Threshold type	Methods for increasing or decreasing noise in images.
Minimum value	Minimum value of threshold coefficient range.
Maximum value	Maximum value of threshold coefficient range.

_{Note: * Fields selected with are required, others are optional.}

You can use the Input image as shown in the example.

C:Robustarobusta.jpg

You can use the Output image name as shown in the example.

C:Robustagrayscale.jpg

You can use the Threshold type as shown in the examples.

Thresh_Binary : The threshold value is compared to each pixel’s value in the image, and pixels that exceed a certain threshold value are set to white while the remaining pixels are set to black.

Thresh_Binary_Inv : The threshold value is compared to each pixel’s value in the image, and pixels that exceed a certain threshold value are set to black while the remaining pixels are set to white.

Thresh_Trunc : The threshold value is compared to each pixel’s value in the image, and pixels that exceed a certain threshold value are set to this threshold value, while higher pixel values are preserved

Thresh_Tozero : The threshold value is compared to each pixel’s value in the image, and pixels that exceed a certain threshold value are preserved, while the remaining pixels are set to zero

Thresh_Tozero_Inv : The threshold value is compared to each pixel’s value in the image, and pixels that exceed a certain threshold value are set to zero, while the remaining pixels are preserved

Thresh_Otsu : The Otsu threshold determines an optimal threshold value using a histogram analysis method to achieve the best separation of object pixel density in the image

You can use the Minimum value as shown in the example.

The default value is 50.

You can use the Maximum value as shown in the example.

255

The default value is 255.

INPUT