Monday, March 9, 2009

Derivative creation and quality control process in DLG

Mary Willoughby at the DLG works closely with TCA on the imaging side of the project. Here's her description of the process she goes through when performing image quality control and creating derivatives:

"As part of the Troup County Superior Court Records project, I convert the document images scanned at TCA into PDF and DjVu images for online display. Along the way, I've been working with Kaye Minchew and the TCA staff to help review the images for consistency and quality and suggesting techniques and software options to help with their scanning process.

Once TCA sends us a disk (typically containing 500GB – 1 TB of tifs) I spot check its contents to make sure the scans are of consistent quality and are properly oriented and cropped. If there are problems that I feel would negatively affect usability in the finished page display I refer them back to TCA. When time and DLG workflow have allowed, we corrected some of these problems here using either BookRestorer (a batch image editing application) or a combination of ACDSee or XNView as a viewer plus Photoshop as an editor. Because of the large number of files involved in the project and the necessity of hand naming by TCA during their scanning process, I also double check the filenames using Quick File Rename, a batch file renaming program that we have found useful for many DLG projects. When fixing problem images at DLG is not an option because of other project demands, the TCA staff corrects scans they feel need improvement and sends us replacement files.

After any necessary changes are made to a set of images, I convert them to DjVu and layered PDF using the JRA Publish software suite. Both of these file formats allow you to greatly compress large images with minimal compression artifacts. They also provide page-turning, zooming, and the ability to print an enlarged version of the image you are viewing from within a web browser if you have the appropriate plug-in installed.

The final step in the DLG's role in managing the images is to move the master tif files to our archival storage system for long term preservation. Though a large amount of drive space is required for this, it is important because these images will allow us to recover from any accidental data loss that might occur in the future. Having a readily available set of high quality images for these documents also preserves our ability to undertake any conversion projects that might be necessary to preserve the usefulness of the collection should the files used to present the images become obsolete or be superceded by new technology."

22 comments:

逆円助 said...

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精神年齢 said...

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メル友募集 said...

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家出 said...

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動物占い said...

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家出 said...

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セレブラブ said...

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夏フェス!! said...

夏フェス一緒に行ってくれる人募集!!夏の思い出一緒につくろぉ☆ megumi-0830@docomo.ne.jp 連絡してね♪

無料ゲーム said...

あなたのゲーマー度を無料ゲーム感覚で測定します。15個の質問に答えるだけの簡単測定で一度遊んでみませんか?ゲームが得意な人もそうでない人もぜひどうぞ。

素人 said...

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出会い系 said...

実は出会い系には…関係者用入り口があるのを知っていますか?広告主やスポンサー用に用意されたIDではサクラや業者が立ち入ることが出来ないようになっているのです。当サイトでは極秘に入手した関係者用URLが公開されています

逆援助 said...

男性はお金、女性は快楽を得る逆援助に興味はありませんか?お金を払っても性的欲求を満たしたいセレブ達との割り切り1日のお付き合いで当サイトでは大金を得ることができます。無料登録なのでアルバイト感覚でOK、詳しくはTOPページでどうぞ。

友達募集 said...

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家出 said...

夏休みで気軽に家出する女子○生が急増しています。しかし家出したはいいものの泊る所やお金が無い彼女たちは、掲示板などで泊めてくれる男性を探す子も多いようです。当掲示板にも夏休みに入ってから通常の3倍以上のメッセージが寄せられています

人妻 said...

今最もアツイバイトは人妻とのセフレ契約です。当サイトではお金を払ってでもセフレがほしい人妻が集まり、男性会員様との逆援生活を待っています。当サイトで欲求不満の女性との出会いをしてみませんか

素人 said...

素人ホストでは、男性のテクニック次第で女性会員様から高額な謝礼がもらえます。欲求不満な人妻や、男性と出会いが無い女性達が当サイトで男性を求めていらっしゃいます。興味のある方はTOPページからどうぞ

友達募集中 said...

少し魅惑な自分をネットだから公開してみました。普段言えない事など、思い切って告白しているプロフなので興味ある方はぜひ除いてみてください連絡待ってまぁす。 hinyaaaaa@docomo.ne.jp

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