Augmentation settings

These settings are available when you augment data to add modified images to the data set.

Filters

Each filter generates one or more new versions of each selected image. The filters are not cumulative. For example, if you select Sharpen and Flip horizontal, six new images are generated: one flipped and five sharpened.

Note: When you select a filter, you can see an example of what that filter would do to an image. This sample image is not a live preview of the filter. It is an example of what an image might look like with that filter applied.

Blur

Select the maximum amount of Gaussian blur and Motion blur. By reducing detail and noise, Gaussian blur makes the entire image look like it's out of focus. Motion blur makes the image look like the subject or camera is in motion.

Five new images are generated in the range of each nonzero selection. For example, assume that Gaussian blur is set to 10 and Motion blur is set to 25. In this case, 10 images are generated:
  • Five images are generated by applying a Gaussian blur filter in the range 0-10.
  • Five images are generated by applying a Motion blur filter in random strengths in the range 0-25.

Sharpen

Select the maximum amount of sharpening to apply. Some noise is introduced. Five new images are generated in the specified range. For example, if Sharpness = 25, 5 new images are generated by applying the sharpen filter in random strengths in the range of 0-25.

Color

Select the maximum amount of change in the image's brightness, contrast, hue, and saturation. Five new images are generated by using randomly selected values in the selected ranges. The resultant values can be either positive or negative.

For example, assume that Color is adjusted with the following values:
  • Brightness is set to 30.
  • Contrast is set to 15.
  • Hue is set to 5.
  • Saturation is set to 10.
In this case, five images are generated with the following adjustments:
  • Brightness is changed from -30% to 30%.
  • Contrast is changed from -15% to 15%.
  • Hue is changed from -5% to 5%.
  • Saturation is changed from -10% to 10%.

Crop

Select the maximum percentage of the image that remains after the adjustment. For example, selecting 25 means that as little as 25% of the original image remains and as much as 75% is removed. Five new images are generated that are cropped in the selected range. The crop is centered at a random point.

For example, if Crop = 25, 5 images are generated with 0% - 75% cropped, retaining 100% - 25% of the original image.

Vertical flip

Creates an image by flipping the existing image across the top edge. The top of the image becomes the bottom.

Horizontal flip

Creates an image by flipping the existing image across the side edge. The left side of the image becomes the right side.

Rotate

Select the maximum value of rotation for the new images. Rotation can be either clockwise or counterclockwise. Five new images are generated that are rotated by this amount. For example, if this value is 45, 5 new images are generated that are rotated either clockwise or counterclockwise by a random number in the range 0-45.

Noise

Select the maximum amount of noise to add to the new images. This value is specified as a percentage of what IBM® Maximo® Visual Inspection determines to be a reasonable amount of noise for the images to remain usable. Therefore, if you select 100, none of the generated images has 100% noise added. Instead, the maximum amount of noise is added to the output while the images remain usable.

Five new images are generated with noise that is added in the specified range. For example, if this value is 25, 5 new images are created. Each image has a random amount of noise that is added in the range 0 - 25% of a reasonable amount of noise.