Merge pull request #10 from nagadomi/fix_chroma_scale
fix ugly chroma scaling
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commit
badfcec987
8 changed files with 43 additions and 18 deletions
0
images/gen.sh
Normal file → Executable file
0
images/gen.sh
Normal file → Executable file
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@ -26,7 +26,8 @@ local function reconstruct_layer(model, x, block_size, offset)
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end
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return new_x
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end
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local function reconstruct(model, x, offset, block_size)
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local reconstruct = {}
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function reconstruct.image(model, x, offset, block_size)
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block_size = block_size or 128
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local output_size = block_size - offset * 2
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local h_blocks = math.floor(x:size(2) / output_size) +
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@ -54,5 +55,37 @@ local function reconstruct(model, x, offset, block_size)
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return output
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end
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function reconstruct.scale(model, scale, x, offset, block_size)
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block_size = block_size or 128
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local x_jinc = iproc.scale(x, x:size(3) * scale, x:size(2) * scale, "Jinc")
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x = iproc.scale(x, x:size(3) * scale, x:size(2) * scale, "Box")
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local output_size = block_size - offset * 2
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local h_blocks = math.floor(x:size(2) / output_size) +
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((x:size(2) % output_size == 0 and 0) or 1)
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local w_blocks = math.floor(x:size(3) / output_size) +
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((x:size(3) % output_size == 0 and 0) or 1)
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local h = offset + h_blocks * output_size + offset
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local w = offset + w_blocks * output_size + offset
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local pad_h1 = offset
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local pad_w1 = offset
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local pad_h2 = (h - offset) - x:size(2)
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local pad_w2 = (w - offset) - x:size(3)
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local yuv_nn = image.rgb2yuv(iproc.padding(x, pad_w1, pad_w2, pad_h1, pad_h2))
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local yuv_jinc = image.rgb2yuv(iproc.padding(x_jinc, pad_w1, pad_w2, pad_h1, pad_h2))
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local y = reconstruct_layer(model, yuv_nn[1], block_size, offset)
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y[torch.lt(y, 0)] = 0
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y[torch.gt(y, 1)] = 1
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yuv_jinc[1]:copy(y)
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local output = image.yuv2rgb(image.crop(yuv_jinc,
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pad_w1, pad_h1,
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yuv_jinc:size(3) - pad_w2, yuv_jinc:size(2) - pad_h2))
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output[torch.lt(output, 0)] = 0
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output[torch.gt(output, 1)] = 1
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collectgarbage()
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return output
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end
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return reconstruct
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@ -13,15 +13,11 @@ local pairwise_transform = require './lib/pairwise_transform'
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local image_loader = require './lib/image_loader'
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local function save_test_scale(model, rgb, file)
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local input = iproc.scale(rgb,
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rgb:size(3) * settings.scale,
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rgb:size(2) * settings.scale)
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local up = reconstruct(model, input, settings.block_offset)
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local up = reconstruct.scale(model, settings.scale, rgb, settings.block_offset)
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image.save(file, up)
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end
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local function save_test_jpeg(model, rgb, file)
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local im, count = reconstruct(model, rgb, settings.block_offset)
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local im, count = reconstruct.image(model, rgb, settings.block_offset)
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image.save(file, im)
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end
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local function split_data(x, test_size)
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10
waifu2x.lua
10
waifu2x.lua
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@ -37,12 +37,11 @@ local function waifu2x()
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local model = torch.load(path.join(opt.model_dir,
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("noise%d_model.t7"):format(opt.noise_level)), "ascii")
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model:evaluate()
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new_x = reconstruct(model, x, BLOCK_OFFSET)
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new_x = reconstruct.image(model, x, BLOCK_OFFSET)
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elseif opt.m == "scale" then
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local model = torch.load(path.join(opt.model_dir, "scale2.0x_model.t7"), "ascii")
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model:evaluate()
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x = iproc.scale(x, x:size(3) * 2.0, x:size(2) * 2.0)
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new_x = reconstruct(model, x, BLOCK_OFFSET)
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new_x = reconstruct.scale(model, 2.0, x, BLOCK_OFFSET)
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elseif opt.m == "noise_scale" then
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local noise_model = torch.load(path.join(opt.model_dir,
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("noise%d_model.t7"):format(opt.noise_level)), "ascii")
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@ -50,9 +49,8 @@ local function waifu2x()
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noise_model:evaluate()
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scale_model:evaluate()
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x = reconstruct(noise_model, x, BLOCK_OFFSET)
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x = iproc.scale(x, x:size(3) * 2.0, x:size(2) * 2.0)
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new_x = reconstruct(scale_model, x, BLOCK_OFFSET)
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x = reconstruct.image(noise_model, x, BLOCK_OFFSET)
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new_x = reconstruct.scale(scale_model, 2.0, x, BLOCK_OFFSET)
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else
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error("undefined method:" .. opt.method)
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end
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8
web.lua
8
web.lua
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@ -74,15 +74,13 @@ local function get_image(req)
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end
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local function apply_denoise1(x)
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return reconstruct(noise1_model, x, BLOCK_OFFSET)
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return reconstruct.image(noise1_model, x, BLOCK_OFFSET)
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end
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local function apply_denoise2(x)
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return reconstruct(noise2_model, x, BLOCK_OFFSET)
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return reconstruct.image(noise2_model, x, BLOCK_OFFSET)
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end
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local function apply_scale2x(x)
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return reconstruct(scale20_model,
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iproc.scale(x, x:size(3) * 2.0, x:size(2) * 2.0),
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BLOCK_OFFSET)
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return reconstruct.scale(scale20_model, 2.0, x, BLOCK_OFFSET)
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end
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local function cache_do(cache, x, func)
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if path.exists(cache) then
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