In the Motive software for OptiTrack, .tak (take) files are generated which contain the motion capture data.
Is there a way to export the individual camera frames as jpeg images?
You cannot export frame by frame as jpeg, see: https://forums.naturalpoint.com/viewtopic.php?f=69&t=15509&p=65604&hilit=kimtae55#p65604
But you can export the video and turn that into frames using ffmpeg.
Related
After reading a huge bunch of docs and tutorials I still cant find a way to add some image or text to each frame of video. Something like logo on the frame corner, or text watermark.
Iam know how to do such things with ffmpeg from cli, but for this case, C\C++ code is required.
Looks like, ffmpeg's libav allow me to do some things with frame on decode stage, using AVFrame structure of current frame and add some modifications to it with libavfilter. But how exactly this can be done?
First, you need the image in the same raw format as the AVFrame::format. Then you can patch the image anywhere on the AVFrame. It will be also useful if the "image" has an alpha channel for transparency. Otherwise, you may resort to color keying.
I'm able to use ExifTool to extract an embedded thumbnail jpeg from within a TIFF. Is there a way that I can do this with drew noakes' metadata-extractor?
The source file is here:
https://corpora.tika.apache.org/base/docs/commoncrawl3/RD/RDAFESH5CBBJWWQZMZR4MGJIPYYEL7DN
The extracted thumbnail/preview image is .
I see the 5225 byte count in a metadata item (0x0202) with metadata-extractor, but I'm not able to get the bytes.
Thank you!
Currently, I can only use jpeg & png exports like:
stageRef.current?.getStage().toDataURL({ mimeType: 'image/jpeg', quality: 1 })
stageRef.current?.getStage().toDataURL({ mimeType: 'image/png', quality: 1 })
I want to export Canvas to svg as well as pdf like Figma does it.
I found out about Data URIs which led to MIME_types. In there, they have written application/pdf & image/svg+xml should work but when I do that I still get a .png image.
Is there any way to achieve .svg & .pdf from Canvas in Konva?
stage.toDataURL() is using canvas.toDataURL() API to do the export. Most of the browsers support only jpg and png formats.
For SVG or PDF exports you have to write your own implementation.
For PDF exports you may use external libraries to generate a PDF file with an image from stage.toDataURL() method. As a demo take a look into Saving Konva stage to PDF demo.
There are no built-in methods for SVG exports in Konva library. You have to write your own implementation. If you use basic shapes such as Rect, Circle and Text without any fancy filters, writing such conversions shouldn't be hard, because there are similar tags in SVG spec.
toDataUrl() exports a bitmap, rather than a vector.
You can generate an svg by using the canvas2svg package.
You can set your Layer's context equal to a c2s instance, rendering it, and resetting your Layer's ref to what it was previously, as shown here.
I am doing a program with ARToolKit, and i need to save a snapshot of the video frame, and save it as a jpg file for example.
Any ideia how can i do that?
Regards
May I know how to determine the output of Bing map static image? Previously it used to be in png but now it is in jpeg. May I know how to revert back to png format?
Example: Display the image with the link below:
http://dev.virtualearth.net/REST/V1/Imagery/Map/Road/space%20needle,seattle?mapLayer=TrafficFlow&mapVersion=v1&key=BingKey
The image is in jpeg. How to make it to png? Thanks.
I know it's a while you posted this question, but as there is no answer yet, and I got here via Google I'll supply an answer anyway.
You can use the format / fmt parameter.
From: http://msdn.microsoft.com/en-us/library/ff701724.aspx
One of the following image format values:
gif: Use GIF image format.
jpeg: Use JPEG image format. JPEG format is the default for Road, Aerial and AerialWithLabels imagery.
png: Use PNG image format. PNG is the default format for CollinsBart and OrdnanceSurvey imagery.
Examples:
format=jpeg
fmt=gif
I don't think you can request the image in a different format.
From http://msdn.microsoft.com/en-us/library/ff701724.aspx :
This URL returns an image in one of
the following formats:
PNG (image/png)
JPEG (image/jpeg)
GIF (image/gif)
You cannot specify the output format
for the map image. The image type is
chosen based on parameters such as
imagerySet.
If you really want a PNG, you could make the request from a server-side script and then construct a PNG file programmatically before serving that back to the client (using PHP's imagepng function, for example)