def contrast_pixels(pixels_list):
    rows_number = len(pixels_list)
    columns_number = len(pixels_list[0])
    counts = 0

    for i in range(rows_number):
        for j in range(columns_number):
            if j != columns_number - 1:
                if abs(pixels_list[i][j] - pixels_list[i][j+1]) > 128:
                    counts += 1
                    continue
            if i != rows_number - 1:
                if abs(pixels_list[i][j] - pixels_list[i+1][j]) > 128:
                    counts += 1
    return counts

pixels = [[1, 130, 1], [130, 200, 210], [1, 250, 10]]

print(contrast_pixels(pixels))