Some old contracts, files or old photos, the above handwriting has been blurred, after scanning is like a layer of fog? Or work received a large number of scanned invoices, documents, the handwriting is difficult to identify? Today to introduce to you is the scanned text clear method, can be scanned documents clear, so that the text edge is sharper, the background is cleaner, read without effort.
Why do you need to clear the text of the scanned document?
Think about these headache scenes, have you encountered them?
Scene 1 (Digitization of Archives): The unit needs to digitize the paper archives decades ago. The scanned old documents have light handwriting and stains, and cannot be seen clearly at all.
Scene 2 (Reimbursement Arrangement): Every month, a pile of invoices and receipts need to be scanned for reimbursement. Some thermal paper printed receipts fade after a long time and become almost white paper after scanning.
Scene 3 (Learning Materials): The PDF materials found on the Internet are actually scanned versions. The printed words are empty and the eyes hurt after looking at them for a long time.
Scenario 4 (document processing): After the ID card, business license and other documents are scanned, the text in the corners is blurred, which affects the submission for review.
Scene 5 (old family photos): the old letters of grandparents and the handwriting on the back of the old photos are blurred and difficult to distinguish if they want to be digitally preserved.
The real pain point: one or two can be adjusted slowly with PS, but in the face of dozens of hundreds of documents, manual processing is a nightmare. What is even more shocking is that the blur of many scanned images cannot be solved by simply brightening, and professional scanning image text clarity processing technology is required. Most tools on the market are either too complex, or ineffective, or can't optimize scans in batches at all.
Preview of the effect of clearer text in scanned pictures
Before treatment:
After treatment:
Method 1: Use HeSoft Doc Batch Tool To batch clear the scanned documents
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Advantages:
1. Naming is intuitive and easy to understand: the interface is clear, and users will know at a glance that it is a special function to optimize the text of scanned documents.
2. The parameters are simple and effective: the complex technology is simplified into several options such as "brightness", "contrast", "sharpening" and the key "text clarity (binarization)", and one-click enhancement.
3. Local batch efficiency and security: All pictures are processed in batches on local computers and are not uploaded to other servers, which is fast and absolutely guarantees privacy and security.
4. The operation process is very simple: complete in a few steps, select the picture, check the required options, and start processing. No complex settings, novice can easily get started.
5. One-stop integration of functions: In addition to making the text clear, it can also synchronously rotate the picture and adjust the transparency to meet various joint requirements of scanned document processing.
Disadvantages:
γ HeSoft Doc Batch Tool ] needs to be downloaded locally to use.
Operation steps:
1. Download and open γ HeSoft Doc Batch Tool ], select [Picture Tools] on the left, and then select [Picture Effect Enhancement] on the right].
2. Click [Add File] at the top right, or drag the file to be processed to the specified location with one click to complete the file upload.
3. Click Next to open the [Document Clarity] button here, and slide below to adjust the value.
4. Click [Next], and the tool will start to clear the text in the scanned picture in batch, and will give a prompt in time after completion.
Method 2: Use the Adobe Photoshop Camera Raw filter to make the scanned text clearer
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Advantages: professional adjustment tools, powerful. The "sharpness", "sharpening" and "de-haziness" sliders in the Camera Raw filter can be fine-tuned, and the mask can locally enhance the text area, which is theoretically one of the schemes with the highest effect limit.
Disadvantages: The operation is extremely complicated and the learning cost is extremely high. Batch processing needs to combine the "action" and "batch processing" functions, the configuration process is cumbersome, and the exposure and blur requirements of each picture are more consistent, otherwise the batch effect is uneven. Not suitable for ordinary office users.
Operation steps:
1. Open PS, drag the scanned picture in, and the Camera Raw interface will pop up automatically.
2. In the "Basic" panel, the "Texture", "Clarity" and "Doggy" sliders are greatly increased.
3. Enter the "Details" panel and fine-tune the "Quantity", "Radius" and "Details" of "Sharpening".
4. Use "Adjustment Brush" or "Radial Filter" to locally enhance the key text area.
5. Record the above operation as "Action" and apply it to other pictures through "File-> Auto β Batch.
Method 3: Use Lightroom Classic to clear the text in the scanned picture
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Pros: sharp weapon for photographers to batch process RAW files, non-destructive editing, powerful presets. Its "sharpness", "sharpening" and "noise reduction" modules have been optimized to improve image details (including text). Batch synchronization setup is very convenient.
Disadvantages: Adobe's subscription-based product, the software is mainly aimed at photography, and the "binarization" (pure black and white) optimization function for scanned documents is weak or requires skills. Processing pure black and white text scans is sometimes not as good as professional OCR software.
Operation steps:
1. Import all scanned pictures to Lightroom gallery.
2. Select one and adjust the "Contrast" and "Sharpness" of the "Basic" panel in the "Modify Photo" module ".
3. Adjust the "Sharpen" and "Noise Reduction" balance in the "Details" panel to avoid noise.
4. Reduce the saturation of irrelevant colors in the "HSL/Color" panel to highlight black and white.
5. Select all pictures and click "Synchronize" to apply the settings to all.
Method 4: Use the online image processing website to clear the text in the scanned document.
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Advantages: No need to install software, open the browser can be used. Provides PS-like basic adjustment tools, such as contrast, sharpening, etc.
Disadvantages: the processing effect is general, and extremely dependent on the network. Uploading a large number of scanned files is time-consuming and has the risk of privacy disclosure (especially contracts and certificates containing sensitive information). There is almost no optimization algorithm or one-click function for the text of scanned documents to become clear, and the batch processing ability is weak.
Operation steps:
1. Open the online photo editor website.
2. Click "Open" to upload the blurred scanned image.
3. Select "Image-> Adjust" in the menu and try "Brightness/Contrast" or "Color Levels".
4. Select "Filter" again, find "Sharpen" and apply it.
5. Export the picture and repeat all steps for the next one.
Method 5: Use mobile phone APP to make the text of the scanned picture clear
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Advantages: anytime and anywhere with a mobile phone can be processed, convenient and fast. Usually integrated with automatic edge detection, perspective correction, filter optimization (such as "document" mode) function, just scanned documents have instant optimization effect.
Disadvantages: Limited processing power, weak optimization ability for existing and poor quality stock scanned image files. Batch processing multiple pictures is cumbersome, and the final effect is limited by mobile phone sensors and algorithms, which is difficult to achieve professional standards. Unable to process a large number of files efficiently on the computer.
Operation steps:
1. Open the mobile phone to scan APP (such as Scanner Pro).
2. Take or import scanned blurred pictures from the album.
3. The software automatically or manually performs cropping and perspective correction.
4. Select "black and white", "enhance" or "document" mode in the filter.
5. Save or export the processed pictures and repeat them one by one.
Method 6: Use the system's own drawing tool to make the text in the scanned document clear.
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Advantages: the system comes with, everyone has.
Disadvantages: The functionality is extremely rudimentary, with only the basic "resize", "rotate" and extremely simple "adjust color" (Windows draw) or "adjust color" (Mac preview). For the professional requirement of how to make the scanned picture text clear, the slider (such as brightness and contrast) provided by it is very rough. The adjustment process depends on
Luck, and there is no possibility of any batch processing at all.
Operation steps:
1. Use "Paint" to open the scanned picture.
2. Click "Resize" to modify the size (but not directly help with clarity).
3. Click "Adjust Color and Saturation" (Win10/11 new version) or "Color" (old version) in "Properties.
4. Drag the "Brightness" and "Contrast" sliders blindly to observe whether the text becomes clear.
Save and repeat all steps for the next image.
Method 7: Use IrfanView (with plug-in) to clear the text of the scanned document
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Advantages: Lightweight, fast image viewer, powerful batch conversion. With its Batch Convert feature, you can apply the same Sharpen, Contrast Adjustment, and other filters to a large number of images.
Disadvantages: Its image enhancement filter is more basic, lack of intelligent binarization (text clarity) optimization for document scans. Users need to manually find and test the combination and parameters of various filters. The process is complicated and the effect is difficult to guarantee, which makes it easy to make a mess of the picture.
Operation steps:
1. Open the IrfanView and click "File-> Batch Convert/Rename".
2. Add all scanned pictures that need to be processed.
3. Click the "Advanced" button to enter the batch processing settings.
4. Add effects such as "Sharpen" or "Brightness/Contrast Adjustment" in "Use Custom Filters.
5. Set the output format and folder, start batch processing, and the effect is random.
Method 8: Use the image processing function attached to the professional OCR software to make the scanned text clear.
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Advantages: This is its core advantage, specifically designed for text recognition, its scanned image text clear processing algorithm is highly targeted. Before OCR recognition, image preprocessing will be carried out automatically or manually, including binarization, denoising, correction, brightness contrast optimization, etc. One key can make the text area extremely clear and greatly improve the recognition rate.
Disadvantages: These powerful preprocessing functions are usually used as the "front dish" of OCR, the purpose is to identify, rather than simply output the optimized picture. If users want to batch optimize the scanned documents and save them as clear pictures, they may need to make some detours, or the software itself does not focus on this output purpose.
Operation steps:
1. Open the ABBYY FineReader and create a new "OCR Project".
2. Import all blurred scanned pictures.
3, the piece will automatically analyze and apply image preprocessing. You can also manually select Process Image from the Image menu ".
4. In the preprocessing options, check "binarization", "sharpen text", "correct skew" and so on.
5. After the processing is completed, OCR recognition is usually performed directly. To export images, select "Save page as image" in the Save options ".
Method 9: Use ScanSpeeder optimization software to clear the scanned picture text
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Advantages: Designed specifically for document scanning optimization, automatic batch processing is powerful. Provides targeted functions such as intelligent noise reduction, background removal, and text sharpening, and supports batch export of multiple formats.
Disadvantages: The operation interface is professional but slightly complicated, and some advanced functions require professional knowledge to give full play to the effect.
Operation steps:
1. Install and open the ScanSpeeder software.
2. Import the scanned picture folder that needs to be processed.
3. Select "Document Optimization" mode in the settings panel.
4. Adjust the noise reduction level and sharpening intensity parameters.
5. Set the output format and quality, and start batch processing.
HeSoft Doc Batch Tool For the clerks of libraries, archives, enterprises and institutions who need to deal with a large number of historical archives, for the financial and legal personnel who often deal with invoices and contracts, and for individuals who want to digitally preserve family memory, it is a very cost-effective efficiency tool. It not only solves a technical problem, but also frees up valuable manpower trapped in inefficient and repetitive labor.