Fix filter name for graphicsmagick

graphicsmagick package has bug in the definition of FilteTypes.
I will send PR to fix that bug.
This commit is related to it.
You should upgrade graphicsmagick package.

$ luarocks install graphicsmagick

lib/pairwise_transform.lua

@@ -7,7 +7,7 @@ local pairwise_transform = {}
 
 local function random_half(src, p)
    if torch.uniform() < p then
-      local filter = ({"Box","Box","Blackman","SincFast","Jinc"})[torch.random(1, 5)]
+      local filter = ({"Box","Box","Blackman","Sinc","Lanczos"})[torch.random(1, 5)]
       return iproc.scale(src, src:size(3) * 0.5, src:size(2) * 0.5, filter)
    else
       return src
@@ -79,8 +79,8 @@ function pairwise_transform.scale(src, scale, size, offset, n, options)
       --"Cartom",     -- 0.013753536746706
       --"Hanning",    -- 0.013761314529647
       --"Hermite",    -- 0.013850225205266
-      "SincFast",   -- 0.014095824314306
-      "Jinc",       -- 0.014244299255442
+      "Sinc",   -- 0.014095824314306
+      "Lanczos",       -- 0.014244299255442
    }
    local unstable_region_offset = 8
    local downscale_filter = filters[torch.random(1, #filters)]

lib/reconstruct.lua

@@ -105,7 +105,7 @@ function reconstruct.image_y(model, x, offset, block_size)
 end
 function reconstruct.scale_y(model, scale, x, offset, block_size)
    block_size = block_size or 128
-   local x_jinc = iproc.scale(x, x:size(3) * scale, x:size(2) * scale, "Jinc")
+   local x_lanczos = iproc.scale(x, x:size(3) * scale, x:size(2) * scale, "Lanczos")
    x = iproc.scale(x, x:size(3) * scale, x:size(2) * scale, "Box")
 
    local output_size = block_size - offset * 2
@@ -121,14 +121,14 @@ function reconstruct.scale_y(model, scale, x, offset, block_size)
    local pad_h2 = (h - offset) - x:size(2)
    local pad_w2 = (w - offset) - x:size(3)
    local yuv_nn = image.rgb2yuv(iproc.padding(x, pad_w1, pad_w2, pad_h1, pad_h2))
-   local yuv_jinc = image.rgb2yuv(iproc.padding(x_jinc, pad_w1, pad_w2, pad_h1, pad_h2))
+   local yuv_lanczos = image.rgb2yuv(iproc.padding(x_lanczos, pad_w1, pad_w2, pad_h1, pad_h2))
    local y = reconstruct_y(model, yuv_nn[1], offset, block_size)
    y[torch.lt(y, 0)] = 0
    y[torch.gt(y, 1)] = 1
-   yuv_jinc[1]:copy(y)
-   local output = image.yuv2rgb(iproc.crop(yuv_jinc,
+   yuv_lanczos[1]:copy(y)
+   local output = image.yuv2rgb(iproc.crop(yuv_lanczos,
 					   pad_w1, pad_h1,
-					   yuv_jinc:size(3) - pad_w2, yuv_jinc:size(2) - pad_h2))
+					   yuv_lanczos:size(3) - pad_w2, yuv_lanczos:size(2) - pad_h2))
    output[torch.lt(output, 0)] = 0
    output[torch.gt(output, 1)] = 1
    collectgarbage()

tools/benchmark.lua

@@ -17,7 +17,7 @@ cmd:option("-dir", "./data/test", 'test image directory')
 cmd:option("-model1_dir", "./models/anime_style_art_rgb", 'model1 directory')
 cmd:option("-model2_dir", "", 'model2 directory (optional)')
 cmd:option("-method", "scale", '(scale|noise)')
-cmd:option("-filter", "Box", "downscaling filter (Box|Jinc)")
+cmd:option("-filter", "Box", "downscaling filter (Box|Lanczos)")
 cmd:option("-color", "rgb", '(rgb|y)')
 cmd:option("-noise_level", 1, 'model noise level')
 cmd:option("-jpeg_quality", 75, 'jpeg quality')

web.lua

@@ -179,7 +179,7 @@ function APIHandler:post()
 	       x = iproc.scale_with_gamma22(x,
 					    math.floor(x:size(3) * (1.6 / 2.0) + 0.5),
 					    math.floor(x:size(2) * (1.6 / 2.0) + 0.5),
-					    "Jinc")
+					    "Lanczos")
 	    end
 	 end
 	 if white_noise == 1 then