diff --git a/dlibrary/dlibrary.py b/dlibrary/dlibrary.py
index 0f73a8e..b4da5cd 100755
--- a/dlibrary/dlibrary.py
+++ b/dlibrary/dlibrary.py
@@ -40,10 +40,13 @@ NO_TONE_REGEX = re.compile('トーン(効果)?[な無]し|グレースケール'
 TONE_REGEX = re.compile('トーン(版|(効果)?[有あ]り)', re.I)
 COLOR_REGEX = re.compile('カラー', re.I)
 MONOCHROME_REGEX = re.compile('モノクロ', re.I)
+MOSAIC_REGEX = re.compile('モザイク', re.I)
+BLACKBAR_REGEX = re.compile('墨消し', re.I)
 IMAGE_QUALITY_REGEXES = [
     { 'better': HI_RES_REGEX },
     { 'better': NO_TONE_REGEX, 'worse': TONE_REGEX },
     { 'better': COLOR_REGEX, 'worse': MONOCHROME_REGEX },
+    { 'better': BLACKBAR_REGEX, 'worse': MOSAIC_REGEX },
 ]
 IMAGE_RESOLUTION_REGEX = re.compile('^(?P<x>[0-9]+)x(?P<y>[0-9]+)$')