diff options
| -rw-r--r-- | js/photo.js | 33 | ||||
| -rw-r--r-- | webcam.html | 2 |
2 files changed, 33 insertions, 2 deletions
diff --git a/js/photo.js b/js/photo.js index e1b8079..566a50d 100644 --- a/js/photo.js +++ b/js/photo.js @@ -154,13 +154,40 @@ var Photo = (function(){ pixel[1] = data[t+1] pixel[2] = data[t+2] pixel[3] = data[t+3] + // if (Photo.denoise) { denoise_pixel(data, w, h, x, y, pixel, Photo.denoise) } row[j] = closest_to(pixel) } } if (! cb) return rows else cb (rows) } - + function denoise_pixel (d, w, h, x, y, pixel, exponent){ + var rr = r, gg = g, bb = b; + var color = [0,0,0] + var total = 0.0 + var xx, yy, x0, y0, weight, r, g, b, t + for (xx = -4.0; xx <= 4.0; xx += 1.0) { + x0 = x+xx + if (x0 < 0 || x0 >= w) continue + for (yy = -4.0; yy <= 4.0; yy += 1.0) { + y0 = y+yy + if (y0 < 0 || y0 >= h) continue + t = (x+xx + w*(y+yy)) * 4 + r = d[ t ] + g = d[ t+1 ] + b = d[ t+2 ] + weight = 1.0 - Math.abs( 0.25 * ((rr-r)/255 + (gg-g)/255 + (bb-b)/255) ) + weight = pow( weight, exponent ) + color[0] += r * weight + color[1] += g * weight + color[2] += b * weight + total += weight + } + } + pixel[0] = color[0] * 255 / total + pixel[1] = color[1] * 255 / total + pixel[2] = color[2] * 255 / total + } function getNaturalDimensions (img) { if (img.naturalWidth) { return { naturalWidth: img.naturalWidth, naturalHeight: img.naturalHeight } @@ -255,7 +282,7 @@ var Photo = (function(){ }, width) } - return { + var Photo = { colors: COLORS, hues: HUES, grays: GRAYS, @@ -273,7 +300,9 @@ var Photo = (function(){ asciiFromUrl: asciiFromUrl, ascii: ascii, neighbor: neighbor, + denoise: 0, } + return Photo })() diff --git a/webcam.html b/webcam.html index 49abe81..7f76131 100644 --- a/webcam.html +++ b/webcam.html @@ -99,6 +99,8 @@ Photo.set_recolor_fn(function(rgb){ return rgb }) +// Photo.denoise = 2 + var hue = 0, sat = 0, lum = 0, quant = 1 listen(hue_el, window, "hue") listen(sat_el, window, "sat") |