Table 1.

Transformations available in Semi-His-Net.

Transformation	Description	Parameter	Range
Rotate	Rotates the picture by degrees.	θ	[-20, 20]
Fliplr	Flips the picture horizontally with a probability of Λ.	Λ	[0, 1]
Flipud	Flips the picture vertically with a probability of Λ.	Λ	[0, 1]
Brightness	Converts the picture to a colorspace with a brightness-related channel, adds between −α and α, then converts back to the input colorspace (RGB).	α	[-30, 30]
Contrast	Adjusts contrast by scaling each pixel to 127 + α*(v−127).	α	[0.1, 1.9]
Cutout	Fills one or more random rectangular patches in the picture using a fill mode.	n	[1, 5]
Dropout	Sets p percent of pixels in picture to zero.	p	[0, 0.1]
Sharpness	Sharpens the picture and covers the results with the initial picture with a strength of Λ.	Λ	[0, 1]
Shear x	Shears the picture alongside the horizontal axis in rate S.	S	[-0.3, 0.3]
Shear y	Shears the picture alongside the vertical axis in rate S.	S	[-0.3, 0.3]
Change Colorspace	Converts to HSV colorspace and adds a value between 0 and α to Hue channel, then converts back to the input colorspace (RGB).	α	[0, 50]
Solarize	Thresholds all pixels over value of T.	T	[0, 256]
Translate x	Transforms the picture horizontally by (Λ × image width) pixels.	Λ	[-0.3, 0.3]
Translate y	Transforms the picture vertically by (Λ × image high) pixels.	Λ	[-0.3, 0.3]
Gaussian Noise	Adds gaussian noise to the picture, sampled normal distribution on per pixel N(0,s).	s	[0, 0.2]
Gaussian Blur	Blurs picture using a gaussian kernel σ.	σ	[0, 3]
Color Temperature	Changes the temperature to Kelvin value between α and β.	α and β	[1000, 40000]
Invert	Inverts the image and replaces the pixels of the original image with a ratio of Λ.	Λ	[0, 1]