![]() Sometimes, cropping, flipping, and rotating of images may also be required. Based on our experience, the most common needs for movie editing are brightness adjustment and patient name and identification removal. Although other formats can be used for the output images (e.g., JPG, PNG, or GIF), it is important to select BMP for preserving the original pixel quality.Īfter the images are extracted, we use Adobe Photoshop to modify the individual images for presentation needs. In general, the number of extracted images can be estimated using the following formula: number of images = frames per sec (fps) × length of movie (sec). A total of 258 images (CTA 001.bmp through CTA 258.bmp) are extracted to Folder A. After entering these parameters, select OK to close the Settings window and then select Save to start the extraction. In this example, we select BMP (bitmap) as the output format, CTA as the output file name, and Folder A as the target folder location. 2B ) then select the Option button to open the Export Image Sequence Settings window to specify the output image format ( Fig. Once the movie is open, select Export from the File drop-down menu then select Movie to Image Sequence from the Export drop-down menu ( Fig. Currently, QuickTime Pro supports a wide range of movie formats. The sample movie clip we use in this illustration is a QuickTime movie containing a sequence of CT images ( Fig. ![]() In QuickTime Pro, select Open Movie in New Player from the File drop-down menu to import an existing movie clip. The key functions for each of these steps can be summarized as follows: step 1, use QuickTime Pro to extract individual images from a movie clip step 2, use the automated Batch command in Photoshop to modify the images step 3, use QuickTime Pro again to create a movie clip from the modified images. Our method is a simple 3-step process as shown in Figure 1. However, experienced Photoshop users can use the same approach for more sophisticated movie modifications. ![]() For illustration, we will discuss the essential steps for editing a sample movie clip with two simple image processing functions: patient information removal and brightness adjustment. The latest versions are 6.5.1 for QuickTime Pro and CS (Creative Suite) for Photoshop. Both of these utilities are cross-platform for Macintosh (Apple Computer) and Windows (Microsoft) operating systems. Photoshop is software currently used by many radiologists in preparing digital images for PowerPoint presentations and publications. QuickTime Pro is a low-cost utility ($29.99) for creating and converting movie clips. ![]() We will describe a simple method for editing movie content using QuickTime Pro and Photoshop (Adobe Systems). Whereas other amateur products such as VideoStudio from Ulead ( and Apple iMovie from Apple Computer ( are targeted for home videotape editing and are relatively inexpensive and easy-to-use, they usually lack the flexibility and capability for the image editing requirements of radiologists. Professional utilities such as After-Effects and Premiere from Adobe Systems ( and Xpress Studio from Avid Technology ( are primarily designed for movie production they are generally expensive and require a steep learning curve. Screen captures showing parameters used for extracting images from sample movie.ĭespite the wide variety of movie editing software utilities available, currently none is optimal for radiologists to accomplish these tasks. 2B -Screen captures showing use of QuickTime Pro (Apple Computer).
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