analog-digital-converter

News Marquee over analog TV stream - C#

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问题 I want to put a news marquee over an analog TV stream using c#, I can stream analog TV using DirectShow but I can't figure out how to mix it with rotating text, should I create a filter? or I have to use another technology than DirectShow? 回答1: DirectShow is the simplest way of doing this but it does have a bit of a learning curve, particularly coming from C#. The Wikipedia page gives you a basic overview of DirectShow. DirectShow tools are available in the latest Windows SDK. Using C++ for

grab frame NTSCtoUSB dongle, opencv2, python wrapper

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问题 Context: I have been playing around with python's wrapper for opencv2. I wanted to play with a few ideas and use a wide angle camera similar to 'rear view' cameras in cars. I got one from a scrapped crash car (its got 4 wires) I took an educated guess from the wires color codding, connect it up so that I power the power and ground line from a usb type A and feed the NTSC composite+ composite- from an RCA connector. I bought a NTSC to usb converter like this one. It came with drivers and some

Concatenating 32 bit integers in C

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问题 I am currently working on a project that will use a thermister as a temperature sensor and displaying this information among other things onto a gui using the raspberry pi. However I am currently stuck on the Analog to digital conversion. Using the sample code from the waveshare ad board I am using I manage to get the voltage to display, however I then need to use this vout in my voltage divider equation to get the resistance of my thermister and I can't figure out how to actually use the 32

How to convert human voice into digital format?

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问题 I am working on a project where biometric system is used to secure the system. We are planning to use human voice to secure the system. Idea is to allow the person to say some words or sentences and system will store that voice in digital format. Next time person wants to enter the system, he/she has to speak some words which may or may not be different from the words used earlier. We don't want to match words but want to match voice frequency. I have read some research papers regarding this

How to convert human voice into digital format?

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I am working on a project where biometric system is used to secure the system. We are planning to use human voice to secure the system. Idea is to allow the person to say some words or sentences and system will store that voice in digital format. Next time person wants to enter the system, he/she has to speak some words which may or may not be different from the words used earlier. We don't want to match words but want to match voice frequency. I have read some research papers regarding this system but those papers don't have any implementation details. So just want to know whether there is

grab frame NTSCtoUSB dongle, opencv2, python wrapper

阅读更多关于 grab frame NTSCtoUSB dongle, opencv2, python wrapper

Context: I have been playing around with python's wrapper for opencv2. I wanted to play with a few ideas and use a wide angle camera similar to 'rear view' cameras in cars. I got one from a scrapped crash car (its got 4 wires) I took an educated guess from the wires color codding, connect it up so that I power the power and ground line from a usb type A and feed the NTSC composite+ composite- from an RCA connector. I bought a NTSC to usb converter like this one . It came with drivers and some off the shelf VHStoDVD software. the problem: I used the run of the mill examples online to trial test