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0 %En cualquier momento, puede querer ver o incluso guardar la imagen con la que estaba trabajando, especialmente después de hacer alguna operación con un nodo. Ver una pequeña imagen del resultado es tan sencillo como crear un nuevo hilo que vaya del zócalo de salida de un nodo a un nodo Output.
Sólo pueden estar activos un nodo Viewer y un nodo Composite a la vez. Para ver que nodos se encuentran activos se puede fijar en el icono de la esfera roja que se encuentra en la cabecera del nodo. Los nodos Viewer se activan pinchando sobre ellos. El nodo Composite que se encuentra activo es siempre el primero y, en cualquier caso, es recomendable que sólo se utilice uno.
[edit] Nodo Viewer
El nodo Viewer es un visualizador con el que se puede ver la imagen en proceso. Inserte el nodo Viewer en la posición del mapa de nodos donde le gustaría obtener un imagen.
Pinche LMB 
en la imagen para actualizarla, si no se había actualizado anteriormente. Puede usar tantos Viewer como desee.
[edit] Usando la ventana del Editor de Imagenes/UV
El nodo Viewer le permite visualizar los resultados en el Editor de Imagenes/UV. La imagen se obtiene simplemente seleccionando IM:Viewer Node en la cabecera de la ventana. El Editor de Imagenes/UV le mostrará la imagen del nodo Viewer que esté seleccionado.
Para grabar la imagen que se esté visualizando en un fichero sólo tiene que usar el menú Image->Save As.
El Editor de Imagenes/UV tiene 3 opciones adicionales en su cabecera para ver las imagenes con o sin canal alfa, o para ver el canal alfa o el canal Z. Mantener el LMB pulsado en el visor de la Imagen le permitirá ver los valores de la imagen.
[edit] Nodo Composite
The Composite node is where the actual output from the compositor is connected to the renderer. Connecting a node to the Composite node will output the result of that node's full tree to the Renderer, leaving this node unconnected will result in a blank image. This node is updated after each render, but also if you change things in your node-tree (provided at least one finished input node is connected).
You can connect three channels: the actual RGBA image, the Alpha image, and the Z (depth) image. You should only have one Composite node in your map so that only one final image is rendered when the Do Composite button is pressed on the Render Options Animation panel (please read Node Composition if you haven't yet). Otherwise, unpredictable results may occur.
[edit] Saving your Composite Image
The RENDER button renders a single frame or image. Save your image using F3 or the File->Save Image menu. The image will be saved using the image format settings on the Render panel.
To save a sequence of images, for example if you input a movie clip or used a Time node, with each frame in its own file, use the ANIM button and its settings. If you might want to later overlay them, be sure to use an image format that supports an Alpha channel (such as PNG). If you might want to later arrange them front to back or create a depth of field effect, use a format that supports a Z-depth channel (such as EXR).
To save a composition as a movie clip (all frames in a single file), use an AVI or Quicktime format, and use the ANIM button and its settings.
[edit] Nodo SplitViewer
The SplitViewer node takes two images and displays one half of each on each side (top socket on the right half, bottom socket input on the left). Use this node for making side-by-side comparisons of two renderings/images, perhaps from different renderlayers or from different scenes. When transitioning between scenes, you want to be sure the stop action is seamless; use this node to compare the end of one scene with the beginning of another to ensure they align.
[edit] Nodo File Output
This node puts out an RGBA image, in the format selected, for each frame range specified, to the filename entered, as part of a frameset sequence. This means that the name of the file will be the name you enter plus a numeric frame number, plus the filename extension (based on format). Based on the format you choose, various quality/compression options may be shown.
To support subsequent arrangement and layering of images, the node can supply a Z-depth map. However, please note that only the OpenEXR image formats save the Z information.
The image is saved whenever Blender feels like it. Just kidding; whenever you press the Render button, the current frame image is saved. When you press the Anim button, the frameset sequence (specified in the Start and End frame) is saved.
This node saves you from doing (or forgetting to do) the Save Image after a render; the image is saved automagically for you. In addition, since this node can be hooked in anywhere in the noodle, you can save intermediate images automatically. Neat, huh?
Filespecs
As with all filename entries, use // at the beginning of the field to shorthand reference the current directory of the .blend file. You can also use the .. breadcrumb to go up a directory.
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Redirects to fix
- Manual.es/Node Composition → Doc:ES/Manual/Composite Nodes
- Manual/Node Composition → Doc:Manual/Compositing Nodes
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