Vào image—> mode—> lab color chọn channel trong kênh channel chon kênh a nhấn cừl+a vào kênh b nhấn cừl+y ( copy and paste ý ) oke!! ta lại tip tục vào image—> mode—> RGB color nh?n ctrl+j để nhân dôi layer vào image chọn neat image quét và quét: Neat Image Demo I Plug-in File Prpfils Filter Tools Help s a D e v ice N oise Profile 1 ► Pie view 1 M Apply 1 N oise Filter Settings I BIS® in Filter P re s e t [fes] R ecentPreîet ■r N oise Fillet Settings Ũ S ) N oise Levels L u m in a n c e --------I— channel Chrominance |-------* — channels +0% Noise Reduction Amounts Luminance channel 60S C hrom inance channels: S5Z Ũ Smooth edges LJ Very low fieq Sharpening Amount l ¥ l Luminance 1----- — channel m W :300 H:300 R:223 G:23ũ 8:232 Si2e: 468x700 Profile quality: 50% match: unknown nhấn ctrl+b chọn thông số như hình: Color Balance Color Balance Color Levels: •10 Cyan Magenta Yellow Û - - ừ Tone Balance -10 Red Green Blue © Shadows I o Midtones o Highlights 0 Preserve Luminosity và OK I Reset I 0 Preview Color Balance Color Balance Color Levels: 12 +5 +10 Cyan Magenta Yellow 0 - Red Green OK Reset 0 Preview Tone Balance G Shadows 0 fo to n e s ! 0 Preserve Luminosity Q Highlights t iê p t ^ c Color Balance Color Balance Color Levels: •10 +10 Cyan Magenta Yellow û Red Green Blue I- OK I I Reset I 0 Preview Tone Balance O Shadows •. Midtones © B s h ilâ b ÿ 0 Preserve Luminosity vào image-> adjustments—>chaimel mixer thong so: mChannel Mixer Preset: Custom OK O utput Channel: Red Source Channels Red: Green: Blue: Reset 0 Preview SB % % % Total Constant: ¿±>+110 % +1 % □ Monochrome