Texture:getPixelHeight
Gets the height in pixels of the Texture.

DPI scale factor, rather than pixels. Use getHeight for calculations related to drawing the texture (calculating an origin offset, for example), and getPixelHeight only when dealing specifically with pixels, for example when using Canvas:newImageData.
pixelheight = Texture:getPixelHeight()
pixelheight number The height of the Texture, in pixels.