Correction of a dark photo: improve detail and reduce noise.
 

   
AKVIS ニュースの購読を申し込むには, 電子メールアドレスを入力してください。
 
 
  プログラム     ダウンロード     サイバーショップ     チュートリアル     サポート     会社情報      お客様の部屋
en  fr  de  es  pt  it  jp  ru    
 

チュートリアル: AKVIS Enhancer

Correction of a Dark Picture

 

あいにく, このページは英語にだけ使用可能です。日本語のバージョンは遠からず出ります。
Attention! You can get a free licence for an AKVIS program by translating texts from English to Japanese.
Please contact us at team@akvis.com.

Jean-Claude Grégoire offers us a tutorial on how to improve a photo with uneven exposure.

Jean-Claude wrote:

For this tutorial I used Adobe Photoshop and the AKVIS Enhancer and AKVIS Noise Buster plug-ins.

Even in very bad cases, the AKVIS Enhancer and AKVIS Noise Buster plug-ins can help you salvage underexposed pictures. In my collection, I have some seriously underexposed photos which, in the past, I tried to salvage with Adobe Photoshop. This was always a long and difficult work and I often needed to use several adjustment layers, or to go into another color mode, or both, without getting a satisfactory result each time. Now that I've discovered the AKVIS Enhancer and AKVIS Noise Buster plug-ins, I've decided to try my luck again with some of those bad pictures : I really was very impressed, because in a few minutes I often got better results than in hours of working with Photoshop alone.

So I decided to share my experience by writing a short tutorial for which I chose an underexposed picture taken last year by one of my grand daughters. She photographied her mother working at home with her laptop. Unfortunately, the flash didn't work and everybody thought the photo was good for the trash can.

  • Step 1. I got the negative and scanned it. Actually, it was a very bad case and when processing the picture in Adobe Photoshop I couldn't get a fully acceptable result, even with the help of several adjustment layers and masks.
    the scanned dark photo
  • Step 2. I load the photo in Adobe Photoshop - its size is 1868 * 1280 pixels and the resolution is 300 ppi. I call the AKVIS Enhancer plug-in (main menu: choose "Filter -> AKVIS -> Enhancer").
  • Step 3. I get a new window with the default settings of the plug-in and I already can see an improved image.
    AKVIS Enhancer: photo processed with the default settings

    but I decide to go further and choose the following settings:
    - Shadows: 100;
    - Highlights: 0;
    - Level of detail: 0;
    - Lightness: 100.

    AKVIS Enhancer: with the new settings
  • Step 4. I click on the apply button on the Control Panel, which applies the correction to the image and closes the plug-in.

    The image is better than the original, but as I am a perfectionist I'm not entirely satisfied with it because, there is too much noise in the darker parts of the picture.

    Noise in the dark areas
  • Step 5. It's now necessary to reduce this noise. For this purpose I used the program AKVIS Noise Buster.

    I saved the image. Maybe it's not a "chef d'oeuvre", but nevertheless it's a very good picture!

    the corrected photo
  • Step 6. The image shows the difference before and after processing - as described above - with the AKVIS Enhancer and the AKVIS Noise Buster plug-ins.

    the image before and after the correction
    Original photo and result

 

 
操作方法 操作方法
   — ワークスペース — ワークスペース
   — 操作方法 — 操作方法
   — 詳細を鮮明に — 詳細を鮮明に
   — プリプレス — プリプレス
   — 色調補正 — 色調補正
   — モードの比較 — モードの比較
   — 後処理 — 後処理
   — バッチ処理 — バッチ処理
   — 環境設定 — 環境設定
操作例 操作例
   — 街路 — 街路
   — 庭で遊ぶ子供 — 庭で遊ぶ子供
   — 大型トラック — 大型トラック
   — 古代都市 — 古代都市
   — シカ — シカ
   — 教会 — 教会

 

ページの先頭へ

 

   プライバシー | サイトマップ | Web サイトの検索    
   連絡先 | Twitter | Facebook | YouTube Channel    
| English  |Français  |Deutsch  |Español  |Português  |Italiano  | 日本語  |Pусский  | © 2004-2012 AKVIS. All rights reserved.