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it:objects-and-animation:chroma_key [2014/03/28 09:05] – carbat01 | it-it:9.0:objects-and-animation:chroma_key [2022/12/18 11:20] (current) – external edit 127.0.0.1 | ||
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====== Chroma Key ====== | ====== Chroma Key ====== | ||
//Questa funzione non è disponibile nella versione Essentials.// | //Questa funzione non è disponibile nella versione Essentials.// | ||
- | Chroma Key Extraction with PicturesToExe | + | Estrazione |
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- | Chroma Key Extraction in PicturesToExe is presently limited to video chroma key and can’t as yet be used with still images such as PNG files. To understand this process, a bit of background may be helpful. When motion pictures or video subjects are filmed in front of a solid color backdrop of a color which doesn' | + | |
- | + | ||
- | How then can this be accomplished with PicturesToExe and how would one proceed to get green screen footage to work with? The user may want to use their own video camera and lights with a simple solid green backdrop. Tutorials on this will be available from some of our PicturesToExe users. Also green screen stock footage can be purchased online at various places. | + | |
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- | To use a green screen chroma key video with PicturesToExe, | + | |
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- | Above, see a still capture of a running horse in a green screen | + | L' |
+ | Come è possibile ottenere questo con PicturesToExe e come si deve procedere per ottenere una ripresa con sfondo verde con cui lavorare? L' | ||
+ | Per usare un video con chroma key con sfondo verde in PicturesToExe, | ||
- | Next, left click the mouse on the “Customize” button | + | {{ it-it: |
+ | Nell' | ||
+ | {{ it-it: | ||
- | Left click and hold down the left mouse button and drag this “eye dropper” icon down into the green background. Notice that after doing this, the zero in the numeric block to the right will change to a number. This number will depend on the actual hue of the green backdrop, but will generally be about 5.0. Release the left mouse button, click on the small down arrow beside the number and a slider as seen below will appear. Look carefully around the subject to see if there is a slight green outline. | + | Poi, si fa clic sinistro sul pulsante |
+ | {{ it-it: | ||
+ | Si fa clic sinistro e tenendo premuto il pulsante sinistro del mouse si trascina l' | ||
- | If an outline is seen, left click and hold down the mouse button on the slider handle and slowly drag it to the right while carefully observing the green “halo” around the subject. As the slider is pulled to the right, the halo will gradually disappear. If the slider is dragged too far, the subject will also begin to disappear. Carefully adjust the slider for optimal subject opacity with minimal halo, in this case 17.90 and the result will be something similar to what is seen below: | + | {{ it-it:9.0:objects-and-animation:oggettianimazioni37.jpg |}} |
+ | Se si vede un contorno verde, si fa clic sinistro e si tiene premuto il pulsante sinistro del mouse sul cursore e lentamente lo si trascina verso destra osservando attentamente l' | ||
+ | {{ it-it: | ||
- | At this point the green background has been subtracted from the green screen | + | A questo punto lo sfondo verde è stato sottratto dal video con sfondo verde ed è possibile usare vari video o sfondi fissi dietro questo |
- | A word of caution to the user. This is not a perfect way to overlay a green screen extract. Entire | + | Una parola di cautela per l' |
- | Below a link to the extracted | + | Quello che segue è un collegamento al video presente |
[[http:// | [[http:// |
it-it/9.0/objects-and-animation/chroma_key.1395997502.txt.gz · Last modified: 2022/12/18 11:20 (external edit)