Part Number: DLP4500
I would like to use a DLP4500 to project a continuously moving line onto an object. The line may be vertical, horizontal, or diagonal. How would I be able to achieve this using the DLP4500 GUI?
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In reply to Kyle Rakos:
Thanks for your reply. I did read the documentation of the DLP4500. However, since I am new to this, I found it a little hard to grasp. From my understanding, this is how I would be able to achieve a dynamic pattern. Suppose I wanted a moving vertical line for some duration of time, I would have to create images of the line. These images would contain the lines at different locations(or columns) in the direction they are supposed to move. I would then have to flash these images as patterns in the GUI. However, I gathered from the documentation that the flash memory has a capacity for only 64 patterns at max. Is my approach valid? If it is valid, it appears to be tedious to have to again make images (to be later fed as patterns) for moving horizontal or diagonal lines.
You suggested that I could achieve this by feeding a video by using a PC/ frontend chip. Could you please elaborate on this approach. It sounds simpler to me. I couldn't make much of the feeding a video part in the document you'd linked me to earlier. I apologize if my questions seem elementary.
In reply to Ashish Rao:
Hello Kyle, I have an object over which I would like to run my pattern/video. Say, I have a doll head with me and a camera of resolution 240x180, I would like a light pattern moving over the doll head to be captured by the camera. The pattern could be a single vertical line, or a single horizontal line or a single diagonal line. In short instead of multiple bands/lines, I would like only one band/line to move over the object through the entire frame of the camera. Also, could I extend it to make a fringe pattern move?
Thank you for clarifying what you are trying to do. I think you have two options, both of which are extendable to arbitrary patterns.
Alternatively, you could mess around with using the image Display Area and Cropped Area to try to artificially contort an image to only display the vertical or horizontal line that you want (I don't think this would work with diagonal lines or fringe patterns). This is definitely not the intended use case of this function but I just wanted to let you know about the idea (you would have to test it to see if it works).
Thanks a lot for your help. I've tried out the second method and it works! I didn't understand the first method for now. I'll try exploring it in detail after I am done with my task. However, I have a couple of questions about the second method (projecting using video mode)
1) What are the downsides of using video mode over pattern mode? Video mode looks pretty universal. In both cases it is required of the user to generate their own images or videos(in case of video mode)?
2) What makes the video mode of the light crafter different from a commercial off the shelf projector? I'd assumed that the lightcrafter displays blacks perfectly (no projection at all) but it turns out that I was wrong. Is there any way to make those white tinges disappear from a perfectly black background when projected?
3) Is there anyway to tune the projector intrinsics (lens intrinsic parameters)?
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