Full Code of joeyballentine/Material-Map-Generator for AI

Repository: joeyballentine/Material-Map-Generator
Branch: master
Commit: 13fdae317078
Files: 9
Total size: 38.4 MB

Directory structure:
gitextract_hg_23ho9/

├── .gitignore
├── LICENSE
├── README.md
├── generate.py
└── utils/
    ├── architecture/
    │   ├── architecture.py
    │   └── block.py
    ├── imgops.py
    └── models/
        ├── 1x_FrankenMapGenerator-CX-Lite_215000_G.pth
        └── 1x_NormalMapGenerator-CX-Lite_200000_G.pth

================================================
FILE CONTENTS
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================================================
FILE: .gitignore
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# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class

================================================
FILE: LICENSE
================================================
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================================================
FILE: README.md
================================================
# Material Map Generator

Easily create AI generated Normal maps, Displacement maps, and Roughness maps.

|Input|Output|Output|Output|
|:-:|:-:|:-:|:-:|
|Diffuse Texture|Normal Map|Displacement Map|Roughness Map|
|<img src="./input/example.png" width="128" height="128">|<img src="./output/example_Normal.png" width="128" height="128">|<img src="./output/example_Displacement.png" width="128" height="128">|<img src="./output/example_Roughness.png" width="128" height="128">|

Before you begin, make sure you have numpy, opencv-python, and pytorch installed (`pip install torch --index-url https://download.pytorch.org/whl/cu117`).

To run, put images in the `input` folder, and type `python generate.py`. Output images will then be placed in the `output` folder, with the type of map appended to the file name.

To run on CPU instead of GPU (not recommended) use the `--cpu` flag.

If you run out of VRAM while generating the maps, try decreasing the tile size by using the `--tile_size` flag. `--tile size 512` is the default. You can also increase this if your GPU has a lot of VRAM.

To avoid seams and other artifacts that can be created, there are 3 optional flags included: `--seamless`, `--mirror`, and `--replicate` for creating different kinds of seamlessness or padding.

To create material maps in the format used by Ishiiruka Dolphin, use the `--ishiiruka` flag. These can then be converted using Ishiiruka's texture tool. If you want to skip having to use the texture tool, you can use the `--ishiiruka_texture_tool` flag instead, and it will generate the textures in that format instead.

Thanks to Xinntao for the ESRGAN architecture used to train these models. The included models are lighter than regular ones and therefore require less VRAM to process the images with.


================================================
FILE: generate.py
================================================
import argparse
import os

import cv2
import numpy as np
import torch
import sys

import utils.imgops as ops
import utils.architecture.architecture as arch

parser = argparse.ArgumentParser()
parser.add_argument('--input', default='input', help='Input folder')
parser.add_argument('--output', default='output', help='Output folder')
parser.add_argument('--reverse', help='Reverse Order', action="store_true")
parser.add_argument('--tile_size', default=512,
                    help='Tile size for splitting', type=int)
parser.add_argument('--seamless', action='store_true',
                    help='Seamless upscaling')
parser.add_argument('--mirror', action='store_true',
                    help='Mirrored seamless upscaling')
parser.add_argument('--replicate', action='store_true',
                    help='Replicate edge pixels for padding')
parser.add_argument('--cpu', action='store_true',
                    help='Use CPU instead of CUDA')
parser.add_argument('--ishiiruka', action='store_true',
                    help='Save textures in the format used in Ishiiruka Dolphin material map texture packs')
parser.add_argument('--ishiiruka_texture_encoder', action='store_true',
                    help='Save textures in the format used by Ishiiruka Dolphin\'s Texture Encoder tool')
args = parser.parse_args()

if not os.path.exists(args.input):
    print('Error: Folder [{:s}] does not exist.'.format(args.input))
    sys.exit(1)
elif os.path.isfile(args.input):
    print('Error: Folder [{:s}] is a file.'.format(args.input))
    sys.exit(1)
elif os.path.isfile(args.output):
    print('Error: Folder [{:s}] is a file.'.format(args.output))
    sys.exit(1)
elif not os.path.exists(args.output):
    os.mkdir(args.output)

device = torch.device('cpu' if args.cpu else 'cuda')

input_folder = os.path.normpath(args.input)
output_folder = os.path.normpath(args.output)

NORMAL_MAP_MODEL = 'utils/models/1x_NormalMapGenerator-CX-Lite_200000_G.pth'
OTHER_MAP_MODEL = 'utils/models/1x_FrankenMapGenerator-CX-Lite_215000_G.pth'

def process(img, model):
    img = img * 1. / np.iinfo(img.dtype).max
    img = img[:, :, [2, 1, 0]]
    img = torch.from_numpy(np.transpose(img, (2, 0, 1))).float()
    img_LR = img.unsqueeze(0)
    img_LR = img_LR.to(device)

    output = model(img_LR).data.squeeze(
        0).float().cpu().clamp_(0, 1).numpy()
    output = output[[2, 1, 0], :, :]
    output = np.transpose(output, (1, 2, 0))
    output = (output * 255.).round()
    return output

def load_model(model_path):
    global device
    state_dict = torch.load(model_path)
    model = arch.RRDB_Net(3, 3, 32, 12, gc=32, upscale=1, norm_type=None, act_type='leakyrelu',
                            mode='CNA', res_scale=1, upsample_mode='upconv')
    model.load_state_dict(state_dict, strict=True)
    del state_dict
    model.eval()
    for k, v in model.named_parameters():
        v.requires_grad = False
    return model.to(device)

images=[]
for root, _, files in os.walk(input_folder):
    for file in sorted(files, reverse=args.reverse):
        if file.split('.')[-1].lower() in ['png', 'jpg', 'jpeg', 'gif', 'bmp', 'tiff', 'tga']:
            images.append(os.path.join(root, file))
models = [
    # NORMAL MAP
    load_model(NORMAL_MAP_MODEL), 
    # ROUGHNESS/DISPLACEMENT MAPS
    load_model(OTHER_MAP_MODEL)
    ]
for idx, path in enumerate(images, 1):
    base = os.path.splitext(os.path.relpath(path, input_folder))[0]
    output_dir = os.path.dirname(os.path.join(output_folder, base))
    os.makedirs(output_dir, exist_ok=True)
    print(idx, base)
    # read image
    try: 
        img = cv2.imread(path, cv2.cv2.IMREAD_COLOR)
    except:
        img = cv2.imread(path, cv2.IMREAD_COLOR)
        
    # Seamless modes
    if args.seamless:
        img = cv2.copyMakeBorder(img, 16, 16, 16, 16, cv2.BORDER_WRAP)
    elif args.mirror:
        img = cv2.copyMakeBorder(img, 16, 16, 16, 16, cv2.BORDER_REFLECT_101)
    elif args.replicate:
        img = cv2.copyMakeBorder(img, 16, 16, 16, 16, cv2.BORDER_REPLICATE)

    img_height, img_width = img.shape[:2]

    # Whether or not to perform the split/merge action
    do_split = img_height > args.tile_size or img_width > args.tile_size

    if do_split:
        rlts = ops.esrgan_launcher_split_merge(img, process, models, scale_factor=1, tile_size=args.tile_size)
    else:
        rlts = [process(img, model) for model in models]

    if args.seamless or args.mirror or args.replicate:
        rlts = [ops.crop_seamless(rlt) for rlt in rlts]

    normal_map = rlts[0]
    roughness = rlts[1][:, :, 1]
    displacement = rlts[1][:, :, 0]

    if args.ishiiruka_texture_encoder:
        r = 255 - roughness
        g = normal_map[:, :, 1]
        b = displacement
        a = normal_map[:, :, 2]
        output = cv2.merge((b, g, r, a))
        cv2.imwrite(os.path.join(output_folder, '{:s}.mat.png'.format(base)), output)
    else:
        normal_name = '{:s}.nrm.png'.format(base) if args.ishiiruka else '{:s}_Normal.png'.format(base)
        cv2.imwrite(os.path.join(output_folder, normal_name), normal_map)

        rough_name = '{:s}.spec.png'.format(base) if args.ishiiruka else '{:s}_Roughness.png'.format(base)
        rough_img = 255 - roughness if args.ishiiruka else roughness
        cv2.imwrite(os.path.join(output_folder, rough_name), rough_img)

        displ_name = '{:s}.bump.png'.format(base) if args.ishiiruka else '{:s}_Displacement.png'.format(base)
        cv2.imwrite(os.path.join(output_folder, displ_name), displacement)


================================================
FILE: utils/architecture/architecture.py
================================================
import math
import torch.nn as nn
import utils.architecture.block as B

####################
# Generator
####################

class RRDB_Net(nn.Module):
    def __init__(self, in_nc, out_nc, nf, nb, gc=32, upscale=4, norm_type=None, act_type='leakyrelu', \
            mode='CNA', res_scale=1, upsample_mode='upconv'):
        super(RRDB_Net, self).__init__()
        n_upscale = int(math.log(upscale, 2))
        if upscale == 3:
            n_upscale = 1

        fea_conv = B.conv_block(in_nc, nf, kernel_size=3, norm_type=None, act_type=None)
        rb_blocks = [B.RRDB(nf, kernel_size=3, gc=32, stride=1, bias=True, pad_type='zero', \
            norm_type=norm_type, act_type=act_type, mode='CNA') for _ in range(nb)]
        LR_conv = B.conv_block(nf, nf, kernel_size=3, norm_type=norm_type, act_type=None, mode=mode)

        if upsample_mode == 'upconv':
            upsample_block = B.upconv_blcok
        elif upsample_mode == 'pixelshuffle':
            upsample_block = B.pixelshuffle_block
        else:
            raise NotImplementedError('upsample mode [%s] is not found' % upsample_mode)
        if upscale == 3:
            upsampler = upsample_block(nf, nf, 3, act_type=act_type)
        else:
            upsampler = [upsample_block(nf, nf, act_type=act_type) for _ in range(n_upscale)]
        HR_conv0 = B.conv_block(nf, nf, kernel_size=3, norm_type=None, act_type=act_type)
        HR_conv1 = B.conv_block(nf, out_nc, kernel_size=3, norm_type=None, act_type=None)

        self.model = B.sequential(fea_conv, B.ShortcutBlock(B.sequential(*rb_blocks, LR_conv)),\
            *upsampler, HR_conv0, HR_conv1)

    def forward(self, x):
        x = self.model(x)
        return x

================================================
FILE: utils/architecture/block.py
================================================
from collections import OrderedDict
import torch
import torch.nn as nn

####################
# Basic blocks
####################


def act(act_type, inplace=True, neg_slope=0.2, n_prelu=1):
    # helper selecting activation
    # neg_slope: for leakyrelu and init of prelu
    # n_prelu: for p_relu num_parameters
    act_type = act_type.lower()
    if act_type == 'relu':
        layer = nn.ReLU(inplace)
    elif act_type == 'leakyrelu':
        layer = nn.LeakyReLU(neg_slope, inplace)
    elif act_type == 'prelu':
        layer = nn.PReLU(num_parameters=n_prelu, init=neg_slope)
    else:
        raise NotImplementedError('activation layer [{:s}] is not found'.format(act_type))
    return layer


def norm(norm_type, nc):
    # helper selecting normalization layer
    norm_type = norm_type.lower()
    if norm_type == 'batch':
        layer = nn.BatchNorm2d(nc, affine=True)
    elif norm_type == 'instance':
        layer = nn.InstanceNorm2d(nc, affine=False)
    else:
        raise NotImplementedError('normalization layer [{:s}] is not found'.format(norm_type))
    return layer


def pad(pad_type, padding):
    # helper selecting padding layer
    # if padding is 'zero', do by conv layers
    pad_type = pad_type.lower()
    if padding == 0:
        return None
    if pad_type == 'reflect':
        layer = nn.ReflectionPad2d(padding)
    elif pad_type == 'replicate':
        layer = nn.ReplicationPad2d(padding)
    else:
        raise NotImplementedError('padding layer [{:s}] is not implemented'.format(pad_type))
    return layer


def get_valid_padding(kernel_size, dilation):
    kernel_size = kernel_size + (kernel_size - 1) * (dilation - 1)
    padding = (kernel_size - 1) // 2
    return padding


class ConcatBlock(nn.Module):
    # Concat the output of a submodule to its input
    def __init__(self, submodule):
        super(ConcatBlock, self).__init__()
        self.sub = submodule

    def forward(self, x):
        output = torch.cat((x, self.sub(x)), dim=1)
        return output

    def __repr__(self):
        tmpstr = 'Identity .. \n|'
        modstr = self.sub.__repr__().replace('\n', '\n|')
        tmpstr = tmpstr + modstr
        return tmpstr


class ShortcutBlock(nn.Module):
    #Elementwise sum the output of a submodule to its input
    def __init__(self, submodule):
        super(ShortcutBlock, self).__init__()
        self.sub = submodule

    def forward(self, x):
        output = x + self.sub(x)
        return output

    def __repr__(self):
        tmpstr = 'Identity + \n|'
        modstr = self.sub.__repr__().replace('\n', '\n|')
        tmpstr = tmpstr + modstr
        return tmpstr


class ShortcutBlockSPSR(nn.Module):
    #Elementwise sum the output of a submodule to its input
    def __init__(self, submodule):
        super(ShortcutBlockSPSR, self).__init__()
        self.sub = submodule

    def forward(self, x):
        return x, self.sub

    def __repr__(self):
        tmpstr = 'Identity + \n|'
        modstr = self.sub.__repr__().replace('\n', '\n|')
        tmpstr = tmpstr + modstr
        return tmpstr


def sequential(*args):
    # Flatten Sequential. It unwraps nn.Sequential.
    if len(args) == 1:
        if isinstance(args[0], OrderedDict):
            raise NotImplementedError('sequential does not support OrderedDict input.')
        return args[0]  # No sequential is needed.
    modules = []
    for module in args:
        if isinstance(module, nn.Sequential):
            for submodule in module.children():
                modules.append(submodule)
        elif isinstance(module, nn.Module):
            modules.append(module)
    return nn.Sequential(*modules)


def conv_block(in_nc, out_nc, kernel_size, stride=1, dilation=1, groups=1, bias=True, \
               pad_type='zero', norm_type=None, act_type='relu', mode='CNA'):
    '''
    Conv layer with padding, normalization, activation
    mode: CNA --> Conv -> Norm -> Act
        NAC --> Norm -> Act --> Conv (Identity Mappings in Deep Residual Networks, ECCV16)
    '''
    assert mode in ['CNA', 'NAC', 'CNAC'], 'Wrong conv mode [{:s}]'.format(mode)
    padding = get_valid_padding(kernel_size, dilation)
    p = pad(pad_type, padding) if pad_type and pad_type != 'zero' else None
    padding = padding if pad_type == 'zero' else 0

    c = nn.Conv2d(in_nc, out_nc, kernel_size=kernel_size, stride=stride, padding=padding, \
            dilation=dilation, bias=bias, groups=groups)
    a = act(act_type) if act_type else None
    if 'CNA' in mode:
        n = norm(norm_type, out_nc) if norm_type else None
        return sequential(p, c, n, a)
    elif mode == 'NAC':
        if norm_type is None and act_type is not None:
            a = act(act_type, inplace=False)
            # Important!
            # input----ReLU(inplace)----Conv--+----output
            #        |________________________|
            # inplace ReLU will modify the input, therefore wrong output
        n = norm(norm_type, in_nc) if norm_type else None
        return sequential(n, a, p, c)


####################
# Useful blocks
####################


class ResNetBlock(nn.Module):
    '''
    ResNet Block, 3-3 style
    with extra residual scaling used in EDSR
    (Enhanced Deep Residual Networks for Single Image Super-Resolution, CVPRW 17)
    '''

    def __init__(self, in_nc, mid_nc, out_nc, kernel_size=3, stride=1, dilation=1, groups=1, \
            bias=True, pad_type='zero', norm_type=None, act_type='relu', mode='CNA', res_scale=1):
        super(ResNetBlock, self).__init__()
        conv0 = conv_block(in_nc, mid_nc, kernel_size, stride, dilation, groups, bias, pad_type, \
            norm_type, act_type, mode)
        if mode == 'CNA':
            act_type = None
        if mode == 'CNAC':  # Residual path: |-CNAC-|
            act_type = None
            norm_type = None
        conv1 = conv_block(mid_nc, out_nc, kernel_size, stride, dilation, groups, bias, pad_type, \
            norm_type, act_type, mode)
        # if in_nc != out_nc:
        #     self.project = conv_block(in_nc, out_nc, 1, stride, dilation, 1, bias, pad_type, \
        #         None, None)
        #     print('Need a projecter in ResNetBlock.')
        # else:
        #     self.project = lambda x:x
        self.res = sequential(conv0, conv1)
        self.res_scale = res_scale

    def forward(self, x):
        res = self.res(x).mul(self.res_scale)
        return x + res


class ResidualDenseBlock_5C(nn.Module):
    '''
    Residual Dense Block
    style: 5 convs
    The core module of paper: (Residual Dense Network for Image Super-Resolution, CVPR 18)
    '''

    def __init__(self, nc, kernel_size=3, gc=32, stride=1, bias=True, pad_type='zero', \
            norm_type=None, act_type='leakyrelu', mode='CNA'):
        super(ResidualDenseBlock_5C, self).__init__()
        # gc: growth channel, i.e. intermediate channels
        self.conv1 = conv_block(nc, gc, kernel_size, stride, bias=bias, pad_type=pad_type, \
            norm_type=norm_type, act_type=act_type, mode=mode)
        self.conv2 = conv_block(nc+gc, gc, kernel_size, stride, bias=bias, pad_type=pad_type, \
            norm_type=norm_type, act_type=act_type, mode=mode)
        self.conv3 = conv_block(nc+2*gc, gc, kernel_size, stride, bias=bias, pad_type=pad_type, \
            norm_type=norm_type, act_type=act_type, mode=mode)
        self.conv4 = conv_block(nc+3*gc, gc, kernel_size, stride, bias=bias, pad_type=pad_type, \
            norm_type=norm_type, act_type=act_type, mode=mode)
        if mode == 'CNA':
            last_act = None
        else:
            last_act = act_type
        self.conv5 = conv_block(nc+4*gc, nc, 3, stride, bias=bias, pad_type=pad_type, \
            norm_type=norm_type, act_type=last_act, mode=mode)

    def forward(self, x):
        x1 = self.conv1(x)
        x2 = self.conv2(torch.cat((x, x1), 1))
        x3 = self.conv3(torch.cat((x, x1, x2), 1))
        x4 = self.conv4(torch.cat((x, x1, x2, x3), 1))
        x5 = self.conv5(torch.cat((x, x1, x2, x3, x4), 1))
        return x5.mul(0.2) + x


class RRDB(nn.Module):
    '''
    Residual in Residual Dense Block
    (ESRGAN: Enhanced Super-Resolution Generative Adversarial Networks)
    '''

    def __init__(self, nc, kernel_size=3, gc=32, stride=1, bias=True, pad_type='zero', \
            norm_type=None, act_type='leakyrelu', mode='CNA'):
        super(RRDB, self).__init__()
        self.RDB1 = ResidualDenseBlock_5C(nc, kernel_size, gc, stride, bias, pad_type, \
            norm_type, act_type, mode)
        self.RDB2 = ResidualDenseBlock_5C(nc, kernel_size, gc, stride, bias, pad_type, \
            norm_type, act_type, mode)
        self.RDB3 = ResidualDenseBlock_5C(nc, kernel_size, gc, stride, bias, pad_type, \
            norm_type, act_type, mode)

    def forward(self, x):
        out = self.RDB1(x)
        out = self.RDB2(out)
        out = self.RDB3(out)
        return out.mul(0.2) + x


####################
# Upsampler
####################


def pixelshuffle_block(in_nc, out_nc, upscale_factor=2, kernel_size=3, stride=1, bias=True, \
                        pad_type='zero', norm_type=None, act_type='relu'):
    '''
    Pixel shuffle layer
    (Real-Time Single Image and Video Super-Resolution Using an Efficient Sub-Pixel Convolutional
    Neural Network, CVPR17)
    '''
    conv = conv_block(in_nc, out_nc * (upscale_factor ** 2), kernel_size, stride, bias=bias, \
                        pad_type=pad_type, norm_type=None, act_type=None)
    pixel_shuffle = nn.PixelShuffle(upscale_factor)

    n = norm(norm_type, out_nc) if norm_type else None
    a = act(act_type) if act_type else None
    return sequential(conv, pixel_shuffle, n, a)


def upconv_blcok(in_nc, out_nc, upscale_factor=2, kernel_size=3, stride=1, bias=True, \
                pad_type='zero', norm_type=None, act_type='relu', mode='nearest'):
    # Up conv
    # described in https://distill.pub/2016/deconv-checkerboard/
    upsample = nn.Upsample(scale_factor=upscale_factor, mode=mode)
    conv = conv_block(in_nc, out_nc, kernel_size, stride, bias=bias, \
                        pad_type=pad_type, norm_type=norm_type, act_type=act_type)
    return sequential(upsample, conv)


================================================
FILE: utils/imgops.py
================================================
import numpy as np
import math

def crop_seamless(img):
    img_height, img_width = img.shape[:2]
    y, x = 16, 16
    h, w = img_height - 32, img_width - 32
    img = img[y:y+h, x:x+w]
    return img

# from https://github.com/ata4/esrgan-launcher/blob/master/upscale.py
def esrgan_launcher_split_merge(input_image, upscale_function, models, scale_factor=4, tile_size=512, tile_padding=0.125):
    width, height, depth = input_image.shape
    output_width = width * scale_factor
    output_height = height * scale_factor
    output_shape = (output_width, output_height, depth)

    # start with black image
    output_images = [np.zeros(output_shape, np.uint8) for i in range(len(models))]

    tile_padding = math.ceil(tile_size * tile_padding)
    tile_size = math.ceil(tile_size / scale_factor)

    tiles_x = math.ceil(width / tile_size)
    tiles_y = math.ceil(height / tile_size)

    for y in range(tiles_y):
        for x in range(tiles_x):
            # extract tile from input image
            ofs_x = x * tile_size
            ofs_y = y * tile_size

            # input tile area on total image
            input_start_x = ofs_x
            input_end_x = min(ofs_x + tile_size, width)

            input_start_y = ofs_y
            input_end_y = min(ofs_y + tile_size, height)

            # input tile area on total image with padding
            input_start_x_pad = max(input_start_x - tile_padding, 0)
            input_end_x_pad = min(input_end_x + tile_padding, width)

            input_start_y_pad = max(input_start_y - tile_padding, 0)
            input_end_y_pad = min(input_end_y + tile_padding, height)

            # input tile dimensions
            input_tile_width = input_end_x - input_start_x
            input_tile_height = input_end_y - input_start_y

            input_tile = input_image[input_start_x_pad:input_end_x_pad, input_start_y_pad:input_end_y_pad]

            for idx, model in enumerate(models):

                # upscale tile
                output_tile = upscale_function(input_tile, model)

                # output tile area on total image
                output_start_x = input_start_x * scale_factor
                output_end_x = input_end_x * scale_factor

                output_start_y = input_start_y * scale_factor
                output_end_y = input_end_y * scale_factor

                # output tile area without padding
                output_start_x_tile = (input_start_x - input_start_x_pad) * scale_factor
                output_end_x_tile = output_start_x_tile + input_tile_width * scale_factor

                output_start_y_tile = (input_start_y - input_start_y_pad) * scale_factor
                output_end_y_tile = output_start_y_tile + input_tile_height * scale_factor

                # put tile into output image
                output_images[idx][output_start_x:output_end_x, output_start_y:output_end_y] = \
                    output_tile[output_start_x_tile:output_end_x_tile, output_start_y_tile:output_end_y_tile]

    return output_images

================================================
FILE: utils/models/1x_FrankenMapGenerator-CX-Lite_215000_G.pth
================================================
[File too large to display: 19.2 MB]

================================================
FILE: utils/models/1x_NormalMapGenerator-CX-Lite_200000_G.pth
================================================
[File too large to display: 19.2 MB]