photos taken with closed shutter or lens cap on, are available, they are averaged and automatically subtracted from each input image. Here, the exposure of the stacked image is equal to the sum of the exposures of the individual input images.ĭark frame subtraction: When dark frames, i.e. Adding is particularly useful to synthetically generate longer exposed images from a set of individual images of the same scene. This can be used to reduce random noise from a set of photos of the same scene, thereby creating smoother images, particularly in image regions with low brightness and color variation.Īddition / Subtraction / Multiplication: Adds, subtracts or multiplies the images. Use this to remove star trails.Īverage: Averages the individual images. The length of the trails can be varied, of course.ĭarken: Compares the images and chooses the darker pixel at each location. See the corresponding gap filling tutorial.Ĭomet Mode: In ‘Lighten’ and ‘Gap Filling’ modes, StarStaX offers a ‘comet mode’ which adds a fading effect to the end of the star trails, simulating the look of comet trails. only the star trails) and control the amount of gap filling to be applied. The user can choose a threshold to limit processing to certain regions of the image (e.g. Gap Filling: Optimized ‘Lighten’ blending mode which tries to eliminate small gaps in star trails. In that case, the “Gap Filling” mode should be used, see below. If your camera pauses between consecutive exposures, there might be small gaps in the resulting star trails. Lighten: Compares the images and chooses the brightest pixel at each location. Mac: Time Lapse Assembler (freeware), ffmpeg or mencoder Use your favorite tool, to convert those images to a video, e.g.:.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |