By which I mean, which functions can recognize an equirectangular image for a 360 x 180 degree panorama and ensure that the two sides of the image that will form the seam are given similar treatment so that there is no obvious seam viewing the entire VR image? Or perhaps I should phrase it the other way around: are there any functions that will often make seams visible because they do NOT try to equalize processes on both sides of the seam?