how can we convert uv values to hsv and then to rgb? about csm HOT 8 CLOSED

'''
Args
    img : torch.FloatTensor  C X H x W  -- this is the image
    uv_map: torch.FloatTensor H x W x 2 -- uv predictions
    uv_img: torch.FloatTensor C x H x W  -- this the texture map
    mask: torch.FloatTensor  1 x  H x W -- mask for the object
Returns
    uv_rendering: torch.FloatTensor  C x H x W
'''
def sample_UV_contour(img, uv_map, uv_img, mask, real_img=True):
    img = img.unsqueeze(0)
    uv_map = uv_map.unsqueeze(0)
    uv_img = uv_img.unsqueeze(0)
    
    uv_sample = torch.nn.functional.grid_sample(uv_img, 2*uv_map-1).squeeze(0)
    uv_sample = uv_sample*mask + (1-mask)

    # alphas = contour_alphas(uv_img.shape[2], uv_img.shape[3], real_img).unsqueeze(0)
    alphas = contour_alphas(uv_img.shape[2], uv_img.shape[3], real_img).unsqueeze(0)* 0 + 1
    # pdb.set_trace()

    alpha_sample = torch.nn.functional.grid_sample(alphas, 2*uv_map-1).squeeze(0)
    # alpha_sample = alpha_sample*0.95 + 0.05
    alpha_sample = (alpha_sample>0.0).float()*0.7
    # alpha_sample = (alpha_sample > 0.9).float()
    alpha_sample = alpha_sample*mask
    
    if real_img:
        # uv_rendering = (uv_sample*alpha_sample)*1.0 + img.squeeze(0)*(1-alpha_sample)*0.3 * (mask) + img.squeeze(0)*(1-alpha_sample)* (1-mask)*0.3
        uv_rendering = (uv_sample*alpha_sample)*1.0 + img.squeeze(0)*(1-alpha_sample)
        uv_rendering = (uv_sample*alpha_sample)*1.0 +  img.squeeze(0)*(1-alpha_sample)*0.4 * (mask) + img.squeeze(0)*(1-alpha_sample)* (1-mask)
    else:
        uv_rendering = (uv_sample*alpha_sample) + (img.squeeze(0)*(1-alpha_sample))

    return uv_rendering