Finding PDF files that do not contain any text

The situation is as follows: you use Easy PDF Search to index and search for words and phrases in your PDF files.  Suddenly, you realise that not all your files have been indexed because they actually do not contain any searchable text.

This can happen if your PDF files are actually scans of documents, and you use an OCR application to read and store the text inside the PDF.  Now you need a quick and easy way to identify those PDF files that have not been scanned.

You can easily do this in Easy PDF Explorer.  First, select the Count images and text option.

If you want an accurate count of the number of images and text, you can leave the option at in all pages.  If you just want to know if a file contains any characters, then selecting the but stop when text is found option will speed up the process significantly.

This is because Easy PDF Explorer no longer has to scan every page in the PDF file – the moment it encounters a page that contains text, it stops scanning.  If your aim is just to know which files don’t contain any text, then this option is the fastest.

Once you’ve selected those options, select the PDF files you want to scan in the explorer window.

Easy PDF Explorer then lists down the files together with the number of characters in each file.

Click on the Characters column, and you can quickly sort the files by number of characters found.

Say you want to copy those files with no text to another folder.  Right click and select the Deselect all item.

Now click on the first file with no text, and while holding down the SHIFT key, click on the last file with no text.  The range of files will be highlighted.

Now right click to bring up the context menu, and click on the Select item.  The range of files will then be selected.

Now just click on the Copy to folder button, select the folder to copy the selected files to, and you’re done.  Now all you have to do is run your OCR application on those files.

Download a 14-day trial of Easy PDF Explorer now to work with your PDF files faster.  Also give Easy PDF Search a try – probably the fastest way to search your PDF files for multiple words and/or phrases.

Using Easy PDF Page

Use Easy PDF Page to rearrange your PDF pages, remove pages, or insert images or pages from other PDF files.

There are 3 main areas in Easy PDF Page:

PDF to edit

The blue section is where the PDF you want to edit is displayed.

To load a PDF to edit, click on the Open file… button and select your PDF.

A thumbnail of the pages is then displayed.

At this point, you can select which pages to delete by unchecking the pages’ check box.

You can also rearrange the order of pages by clicking on a page thumbnail, then dragging and dropping it into the new location.  The thumbnail description displays the original page number, followed by the rearranged page order.

Images / PDF to copy pages from

The purple section is where the additional pages and/or images you want to add are displayed.

To load images and PDFs, click on the Open file(s)… button.  You can select multiple image and/or PDF files.

Thumbnails of the selected items are then displayed,

To add the images/pages to your PDF, drag and drop the thumbnail from this purple area to the blue area above.

PDF page / Image

This area displays a larger thumbnail of the selected page or image.  You can zoom in on the page or image by using the mouse wheel.

Saving the modified file

Once you have modified your PDF file to your needs, click on the Save modified file button to save your PDF file.

Easy PDF Page makes it easy to add, replace, and reorder the pages in your PDF files.  Download a 14-day trial now and experience it for yourself.

More details can be found on our web site.

What’s new in Easy PDF Search 4

Easy PDF Search (EPS) 4 was recently released with the following changes:

Notes window

There is now a Notes window in EPS which you can use to take notes while working with your search results.  The Notes Editor is a simple text editor, and will float above all other EPS windows.

Your notes are saved in the rich-text format, and if you have Microsoft Word installed, you can also save the notes to DOCX and PDF formats.

You can also embed PDF documents into the Notes window, so you can view multiple PDF documents simultaneously for reference.

Usability improvements

  • You can now scroll across multiple pages by holding down the SHIFT key and moving the mouse wheel.
  • You can now zoom in and out of a page by holding down the CONTROL key and moving the mouse wheel.
  • You can now specify the font size to be used in the Search and Results windows via the Settings screen.

Database clean-up

Over time, the full-text index database may contain entries for non-existing files.  You can now delete those entries using the Clean function in the Settings screen.

This will free up space in the database for new files, but it will not reduce the size of the file.

For existing users who purchased a license within the last 12 months, you can upgrade to version 4 for free.  For users with older licenses, you can purchase a license extension for only USD 10.

You can download a 14-day trial version using this link.

Updating embedded data in OLE Object fields

Do you need to update a batch of OLE Object fields, and you don’t want to have to update them individually using your application?  Access OLE Import can help you with such tasks.

We had a user that needed to update a few thousand rows in an Access table, specifically an OLE Object field that stores a zip archive.  He already had all the zip files ready, but did not want to have to update each record individually.

So in SQL Image Viewer, the existing records show up as zip archives embedded in OLE Object packages:

The user already has the new zip files he wants to update the records with.  Using Access OLE Import, he just needs to prepare an upload definition file providing the key field value (ID in this case) and the OLE Object column to update the contents for (the quotations field).

In Access OLE Import, we enter the table to update together with this data file.

And that’s it.  Access OLE Import will update the OLE Object fields with the new zip files accordingly.

Note that you can also update any of the other text or numeric fields in your tables using Access OLE Import.  For e.g. if the user had wanted to update the address field, he only needed to enter the new values in the data file e.g.

Learn more about Access OLE Import here, or download a 14-day trial now.  Access OLE Import can help you update batches of records easily, instead of having to update each record individually via your application.

See here on how you can update linked file locations using Access OLE Import.

Updating linked file locations in OLE Object fields

Have you ever needed to update the linked file locations in an OLE Object-type field in your database?  Access OLE Import can do all that for you and more.

Let’s say you have a table with an OLE Object column that contains links to a file.  In SQL Image Viewer, you may see the following:

So all the images are currently linked to files located in the F:\Customer files\ folder.  What if the files are no longer there, for e.g. when you share your database with other users?  Your users will not be able to access the images because they may not have that folder available to store the images.

Access OLE Import can help you update the details in the OLE Object field.  To do that, you just need to provide the key field value of the records to update, and their corresponding file location, in an Excel file.  So for e.g. let’s say all our images are now stored in the G:\Employee photos\ folder.  Our Excel spreadsheet will simply contain the following:

The ID column refers to the ID field in our table.  The keynumber definition tells Access OLE Import that this is an integer key value.

The photo column refers to the photo field in our table, and filecontent tells Access OLE Import we want to work with the contents of the files listed in this column.

We then tell Access OLE Import that we want to create links to the files.

And that’s all there is to it.  Access OLE Import will update the relevant records, and the links to the images are updated accordingly.

If you prefer to embed the image in the table, then select the embedded option instead.

Now Access OLE Import will embed the images directly in the table.

Learn more about Access OLE Import here, or download a 14-day trial now.  Access OLE Import can help you update batches of records easily, instead of having to update each record individually via your application.

See here for a more detailed example on how to update embedded OLE Object data.

Working with measurement labels in your DICOM images

In Easy DICOM Viewer, you can create multiple measurements in your DICOM image.  By default, only the label for the selected measurement is displayed, to make it obvious which measurement the label is referring to.

You can also choose to display all the measurement labels by selecting the Show all option on the Labels options.

However, in this example, our labels overlap each other.

To reposition a label, first select the Move, edit, delete item from the measurements context menu.

Then select the measurement area you want to reposition the label for.  Press CONTROL and click on the new label position.   Here, we have repositioned our 2 labels so that they no longer overlap when displayed simultaneously.

The measurements panel

All the measurements are also displayed on the measurements panel together with the measurement details.

You can also perform various actions like hiding all the measurements on the images, applying the various label options, or deleting one or more measurements.  You can also export details of your measurements to a Microsoft Word file.  Just click on the Export image and measurements to Word button and enter the file name.

The exported Word file is automatically opened by default.

Learn more about Easy DICOM Viewer, or download a 14-day trial now and experience for yourself how easy it is to create, edit, and share measurements in your DICOM images.

Converting your DICOM images

Easy DICOM Viewer lets you convert your DICOM images to other image formats easily, and will include any measurements and annotations that you have created.

To export an image, click on the Export image… item on the context menu.

Enter the file name for the exported image.  The default image format is JPEG.  To change the image format, click on the Save as type drop-down list and select your format.

Easy DICOM Viewer supports most of the common image formats.  If you want to export to a format that’s currently not available, drop us a line at support@yohz.com.

If your image contained any measurements or annotations, they will also be visible in the exported image.

Learn more about Easy DICOM Viewer, or download a 14-day trial now.

Color schemes in Easy DICOM Viewer

You can use Easy DICOM Viewer in 3 color schemes – light, dark, and gray, depending on your preferences.

To change the color scheme, select Application > Color scheme from the main menu.

Then select the color scheme you want to use.

In some cases, you may need to restart Easy DICOM Viewer to apply the new color scheme.  Learn more about Easy DICOM Viewer, or download a 14-day trial now.

Measuring regions of a similar color in DICOM images

Easy DICOM Viewer  lets you measure regions of interest in your images using various options.  One such option is to measure the length and area of a region of similar color.

To use that option, first select the Similar colors item from the measurement sub-menu.

A new window is displayed where you first click on the point you want to measure.  You can zoom in and out of the image using the mouse wheel.

Let’s say we want to select the whitish region here.

We first click anywhere in that region.  A polygon area is automatically created for us.

This initial selection contains only the area which has identical values to the point we clicked on.  To expand the selection to similar values, we adjust the tolerance slider on the left.

You can also adjust how smooth the shape is by adjusting the number of points used to form the selection.

Once we have finalized our selection, press the ESCAPE key.  We then return to our viewing screen with our selection, and the measurements for area, length, minimum, maximum, mean and standard deviation of the HU values in the selected area are displayed, together with the length of the longest axis and the longest line perpendicular to the longest axis.

You can still adjust the selection area by dragging or deleting any of the existing points.  You can also add additional points to the shape.

What if we only want to select part of the area with similar colors?  Let’s say we only wanted to measure the right side of the above region.  We can either adjust the shape after selecting the entire area, or we could use the Similar colors (selection) option.

The steps to select the region is identical to the Similar colors option, but you first define the region of the image you want to select from.  You do this by clicking and dragging the mouse to form a selection rectangle on the image, then release the mouse.

When you then enter the selection window, only the selected area is displayed.

Now we just need to click inside the area, adjust the tolerance values, and we’re done.  The selected area will be constrained accordingly in the final measurement.

Learn more about Easy DICOM Viewer now, or download a 14-day trial to experience for yourself how easy it is to measure regions of similar colors in your DICOM images.

Viewing your DICOM images using the standard color palettes

In Easy DICOM Viewer, you can view your DICOM images using the standard color palettes easily – hot iron, hot metal blue, PET, PET 20 , and rainbow.

The fastest way to do that is by using the keyboard shortcut W.  When you first press W, you will enter the windowing mode.

When you are already in the windowing mode, pressing the W key again will cycle through the various color palettes.  In this way, you can easily apply the various color palettes fast.

You can also change the color profile using the sub-items of the windowing menu:

or from the context menu when in the windowing mode:

Learn more about Easy DICOM Viewer now, or download a 14-day trial to experience for yourself how easy it is to apply the standard color profiles to your DICOM images.