Low-Cost Image Capture System for Computer Interfacing

In summary, a digital compact camera can be used for capturing still images with excellent quality for a low cost, and a webcam can be used for capturing images if you don't mind having to do some calibration. If you need to capture moving images then a webcam is not the best option, and a digital SLR camera may be more suitable.
  • #1
dmehling
114
0
I know this may not be the right place to post this question, but I figured some of you engineering folks might have some suggestions. I am looking for a way of capturing images through a device that easily interfaces with a computer. Scanners are out of the question for my application for several reasons. The best I can come up with is a web camera, but most that are available are lacking in necessary resolution. A digital camera is doable but more complicated since only the higher end cameras have software available to capture images from a PC. I am needing a low cost solution. Any suggestions?
 
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  • #2
How many pixels do you need
How much light do you have available
Is the object moving, how fast do you have to take the picture
What range, how fancy a lens do you need?
Is the object fixed, do you need autofocus?

You get an awful lot of image quality for your money from regular digital compact cameras
A lot of people have done hacks to control them from computers eg. http://www.camerahacker.com/books/Hacking_Digital_Cameras/ or http://chdk.wikia.com/wiki/CHDK
 
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  • #3
The image will be still and fixed, and will be approximately 10 to 14 inches away. As far as lighting goes, I can probably provide as much as I need. I'm not sure how many pixels I need. The more the better. However I will probably be stuck using a web camera, and most are under three megapixels. I'm basically trying to capture fine details at fairly close range. What I am trying to accomplish might just come down to figuring out how to get the best image quality with a less than ideal camera.
 
  • #4
If you need megapixel moving images then a webcam is probably the cheapest - but the lenses are poor so you might have to do a lot of calibration.

If you can settle for a single shot then either a compact or SLR digital camera would be best value. There are a number of official or hack ways of remote controlling the camera and downloading the data.
 
  • #5
I will only be capturing still images, but I plan on sticking with a web cam since I can have captured images immediately saved on the hard drive and don't have to worry about batteries. An SLR camera is way out of my price range. I wouldn't have any problems with this project if I had a decent budget. I'm curious about what you mean by calibration. What calibration can I make with a web camera?
 
  • #6
mgb_phys said:
If you need megapixel moving images then a webcam is probably the cheapest - but the lenses are poor so you might have to do a lot of calibration.
You may also consider mating a webcam to an SLR lens if the webcam lens proves insufficient...
 
  • #7
That sounds rather interesting. How would I do such a thing? And what exactly will that accomplish? Is it actually possible to get decent images with a 1.3 megapixel camera? I would love to hear about any other simple enhancements you can suggest.
 

1. What is a low-cost image capture system for computer interfacing?

A low-cost image capture system for computer interfacing is a device that allows you to capture images or videos and transfer them directly to your computer for editing, processing, or storage. It typically consists of a camera, a connector for the computer, and software for controlling the capture and transfer of images.

2. How does a low-cost image capture system work?

A low-cost image capture system works by using a camera to capture images or videos and then transferring them to a computer through a connector, such as USB or HDMI. The software included with the system allows you to control the capture settings and transfer the images to your computer for further processing.

3. What are the benefits of using a low-cost image capture system for computer interfacing?

One of the main benefits of using a low-cost image capture system is its affordability compared to professional-grade systems. It also allows for easy transfer of images to a computer for editing and storage. Additionally, these systems are often user-friendly and require minimal technical knowledge to operate.

4. What are the common features of a low-cost image capture system?

Common features of a low-cost image capture system include a camera with adjustable settings for image quality, a connector for computer interfacing, and software for controlling the capture and transfer of images. Some systems may also include features such as remote control, live preview, and compatibility with different types of cameras.

5. Is a low-cost image capture system suitable for professional use?

While a low-cost image capture system may not have all the advanced features and capabilities of a professional-grade system, it can still be suitable for professional use depending on the specific needs of the user. These systems are often used in fields such as education, research, and small-scale production. However, for more demanding or specialized applications, a higher-end system may be necessary.

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