Do dynamic guidelines for backup camera only work for installs with canbus? (TS10/Topway/Oknavi)
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There are cameras that calculate the trajectory based on car movement. I thought that if cameras can do that then HU should have enough of CPU to so the same.
gottahavit
Senior Member
If it's built into your camera then your HU has nothing to do with nor does the canbus, if it's not built into the camera and was a feature of your cars system then you would need the canbus. My aftermarket camera has it built in, anything I do on the HU just adds a second set of static lines. I have no Canbus, but my lines work fine.
Sounds interesting. I did not know that there were cameras that could estimate trajectory. My car is a 2012 with limited/minimal canbus so I run without a canbus module. I've only had static lines added by head units up until now.
Please post aliexpress link to the camera with the trajectory.
Thanks
Please post aliexpress link to the camera with the trajectory.
Thanks
@mastrv https://www.aliexpress.com/item/1005001290779404.html
3rd option is dynamic trajectory. last one is ahd1080
this is for the cam in a housing for a mazda2. also available by itself and cheaper from other sellers.
seems to be an inferior camera though (no ahd1080 / starlight night vision / wide angle)
3rd option is dynamic trajectory. last one is ahd1080
this is for the cam in a housing for a mazda2. also available by itself and cheaper from other sellers.
seems to be an inferior camera though (no ahd1080 / starlight night vision / wide angle)
Aliexpress descriptions are hit and miss. I presume 2053 means GalaxyCore 2053 imager. This chip is very tiny, only 1/5" diagonal, therefore I wonder how they claim good night performance. This review is not speaking highly of it: https://dashcamtalk.com/wonvon-w4k/
With that said, I don't know what is a good backup camera
Myself, I got AHD 720p
As to trajectory, based on reviews, camera based is not accurate and only works when car is in motion/does not react to steering wheel position (obviously). I thought that perhaps HU implementation, with more CPU power could do better.
With that said, I don't know what is a good backup camera
Myself, I got AHD 720pAs to trajectory, based on reviews, camera based is not accurate and only works when car is in motion/does not react to steering wheel position (obviously). I thought that perhaps HU implementation, with more CPU power could do better.
Yeah, it's a minefield. Vendors advertising diagonal FOV to make their numbers bigger, claiming 1080p or HD for CVBS. Most 720p cameras are below 600TVL and, as you mention, IR or LED models are likely compensating for bad imaging chip and to inflate sensitivity numbers.
For what it's worth, I finally wired up the ahd1080p gc2030hd the other day. Curiously, with the ground connected, there's some sort of ground loop interference. Leaving it unhooked and using the composite ground only produces a clean image. Maybe performance is inadequate if used as a dashcam, but as a reverse camera, I'm thoroughly impressed with the nighttime performance. The seller cautioned using the 1080p variant with the fyt uis7862, advising instead to opt for the ahd720p version, but it works just fine.
Still debating which guidelines to use, but I'm now very tempted to try and rig up the canbus to see if dynamic guidelines can work. My unit came with a canbus decoder, but my car doesn't send canbus wires to the radio.
Still debating which guidelines to use, but I'm now very tempted to try and rig up the canbus to see if dynamic guidelines can work. My unit came with a canbus decoder, but my car doesn't send canbus wires to the radio.
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seems so but I haven't taken measurements. It's definitely deceptively wider than it appears because of the aspect ratio. Claims to be 170* in ahd, and 160* with the wire cut for cvbs.
I went through three cameras from Ali. Two were fake 1080p and angle (got my money back), third one is a nice improvement over OEM, especially at night. Paid $22 if anyone is interested: https://www.aliexpress.com/item/1005001861087222.html However, no guarantees that seller is not going to substitute for something else so YMMV. View angle is around 170deg@1080p. I am thinking of getting one for front as well (have to check if Head Unit can mirror the image since it's a backup camera).
Yesterday I installed my OWNICE K7 (with CAN) from Ali. Its a TS10. It has a 360° bird view camera system with real 1080p integrated. I have two switchable options for the rear cam. One with fixed guide lines (red/yellow/green) and a second one with a yellow trajectory lane wich follows the steering wheel angle. BUT: The trajectory lane curves more than the turning circle of the vehicle is. If I were to follow the trajectory lane, I would have already driven off both rear fenders.
Did you set up your car parameters for 360 cameras? Does it use those settings to set reversing trajectory lines?
I need to figure out why my Simplesoft canbus is not sending steering wheel info. My lines do not move yet.
I just bought one of those AliExpress dynamic trajectory AHD 1080p reversing cameras. I can confirm that this function appears to be built into the unit itself and does not use canbus. Guide lines do not move unless the car is in motion and they are not particularly accurate. In fact, I find them distracting and will be replacing the camera with another basic camera without this feature.
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1If it's built into your camera then your HU has nothing to do with nor does the canbus, if it's not built into the camera and was a feature of your cars system then you would need the canbus. My aftermarket camera has it built in, anything I do on the HU just adds a second set of static lines. I have no Canbus, but my lines work fine.1For what it's worth, I finally wired up the ahd1080p gc2030hd the other day. Curiously, with the ground connected, there's some sort of ground loop interference. Leaving it unhooked and using the composite ground only produces a clean image. Maybe performance is inadequate if used as a dashcam, but as a reverse camera, I'm thoroughly impressed with the nighttime performance. The seller cautioned using the 1080p variant with the fyt uis7862, advising instead to opt for the ahd720p version, but it works just fine.
Still debating which guidelines to use, but I'm now very tempted to try and rig up the canbus to see if dynamic guidelines can work. My unit came with a canbus decoder, but my car doesn't send canbus wires to the radio.
1I managed to get dynamic trajectory working on a gen 3 rav4 by adding a obd to canbus uart cable with a raise ft-rz-01 canbus box. This vehicle never had reverse trajectory dynamic lines but it works well. Just FYI. My head unit is a xy audio 5760B wity a AC8259 soc. It also is giving me door ajar info for each door.
