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ASI178 Camera Performance on Rasperry PI 4
- Paweł Soja
-
Topic Author
- Offline
- Junior Member
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- Posts: 28
- Thank you received: 17
ASI178 Camera Performance on Rasperry PI 4 was created by Paweł Soja
Hi!
Has anyone managed to reach the maximum number of frames declared by the manufacturer on the Raspberry PI for full resolution (> 40fps)?
I have got ASI178MM and (when there is good cosmic radiation
) I am getting 27fps (should be 60fps).
The problem may not be directly related to the great libraries you create, but the hardware that many of you probably use.
I decided to add a Raspberry PI 4 to my telescope to remotely control it and cameras, focusers and other devices.
I spent most of my life on Linux and there was no problem to run and add missing drivers.
I'm a console guy, I don't use raspberry graphics environments.
I try not to spend resources on "elegant" stuff.
I am trying to reach the maximum frame rate on an ASI178 camera at full resolution.
To increase the number of frames, I added a proposal to the Indi libraries.
Now I get this value on the Thinkpad Extreme X1 laptop and 27fps unstable on the raspberry.
To rule out Indi problems (which shouldn't exist anymore), I wrote a simple program that only reads camera frames in a loop. Something like:The achieved parameters are close to what the Indi libraries are achieving now. So the problem is with the hardware itself, or with libASICamera2.
Raspberry PI 4When I set HighSpeedMode to 1, the FPS are below 5 ...
Sample result on thinkpad.
I am happy to take some helpful tips.
Are libASICamera2 sources available?
Now I'm starting to parse USB packets in Wireshark to restore libASICamera2 sources.
Has anyone managed to reach the maximum number of frames declared by the manufacturer on the Raspberry PI for full resolution (> 40fps)?
I have got ASI178MM and (when there is good cosmic radiation
) I am getting 27fps (should be 60fps).The problem may not be directly related to the great libraries you create, but the hardware that many of you probably use.
I decided to add a Raspberry PI 4 to my telescope to remotely control it and cameras, focusers and other devices.
I spent most of my life on Linux and there was no problem to run and add missing drivers.
I'm a console guy, I don't use raspberry graphics environments.
I try not to spend resources on "elegant" stuff.
I am trying to reach the maximum frame rate on an ASI178 camera at full resolution.
To increase the number of frames, I added a proposal to the Indi libraries.
Now I get this value on the Thinkpad Extreme X1 laptop and 27fps unstable on the raspberry.
To rule out Indi problems (which shouldn't exist anymore), I wrote a simple program that only reads camera frames in a loop. Something like:
// set minimum exposure, etc...
tic();
for(int i = 0; i < 1000; ++i) getVideoData(buffer, bufferSize);
toc();Raspberry PI 4
Find best bandwidth
|---------------------------------------------------------------------------------------------------------------------------------|
| BW [%] | Frame duration [ms] |
|---------------------------------------------------------------------------------------------------------------------------------|
| 40% | 299 189 68 82 82 82 82 82 87 82 82 82 82 82 82 82 82 82 82 82 |
| 45% | 61 73 73 72 73 73 73 72 73 73 73 73 73 73 73 73 73 73 73 73 |
| 50% | 54 65 61 69 65 61 71 65 61 69 65 62 69 66 65 65 65 65 65 65 |
| 55% | 48 59 55 59 64 59 59 55 59 64 59 59 54 60 64 59 59 59 59 55 |
| 60% | 43 58 53 52 58 55 51 55 58 55 52 55 57 54 52 56 56 54 55 52 |
| 65% | 40 50 50 53 50 48 50 53 50 47 50 53 50 48 50 53 50 48 50 53 |
| 70% | 34 44 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 |
| 75% | 31 44 44 44 43 44 44 44 44 44 43 44 43 44 44 44 44 44 43 44 |
| 80% | 28 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |
| 85% | 24 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 |
| 90% | 22 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 |
| 95% | 21 35 1872 587 588 586 585 585 583 588 96 38 587 588 585 1103 1102 1102 582 587 |
| 100% | 574 1080 1077 590 1083 1080 1077 591 1082 1080 1077 592 1081 1080 1077 592 1080 1080 1078 591 |
|---------------------------------------------------------------------------------------------------------------------------------|
Best bandwidth is 90%, it has 28.1 FPSSample result on thinkpad.
$ asitest HighSpeedMode 0
Camera Found!
|-----------------------------------------------------------|
| Parameter | Value |
|-----------------------------------------------------------|
| Name | ZWO ASI178MM |
| Camera Id | 0 |
| Max Height | 2080 |
| Max Width | 3096 |
| Is Color | no |
| Bayer Pattern | RG |
| Supported Bins | 1, 2, 3, 4 |
| Supported Video Format | Raw8, Raw16 |
| Pixel Size | 2.4 |
| Mechanical Shutter | no |
| ST4 Port | yes |
| Is Cooled Camera | no |
| Is USB3 Host | yes |
| Is USB3 Camera | yes |
| Elec Per Adu | 0.916 |
| Bit Depth | 14 |
| Is Trigger Camera | no |
|-----------------------------------------------------------|
Set 'HighSpeedMode' to 0
Camera Options
|------------------------------------------------------------------------------------------------------------------------------|
| Option Name | Value | Min | Max | Default | Auto | Description |
|------------------------------------------------------------------------------------------------------------------------------|
| Gain | 0 | 0 | 510 | 210 | no | Gain |
| Exposure | 1000 | 32 | 2000000000 | 10000 | no | Exposure Time(us) |
| Offset | 10 | 0 | 600 | 10 | no | offset |
| BandWidth | 95 | 40 | 100 | 50 | no | The total data transfer rate percentage |
| Flip | 0 | 0 | 3 | 0 | no | Flip: 0->None 1->Horiz 2->Vert 3->Both |
| AutoExpMaxGain | 255 | 0 | 510 | 255 | no | Auto exposure maximum gain value |
| AutoExpMaxExpMS | 30000 | 1 | 60000 | 100 | no | Auto exposure maximum exposure value(unit ms) |
| AutoExpTargetBrightness | 100 | 50 | 160 | 100 | no | Auto exposure target brightness value |
| HardwareBin | 0 | 0 | 1 | 0 | no | Is hardware bin2:0->No 1->Yes |
| HighSpeedMode | 0 | 0 | 1 | 0 | no | Is high speed mode:0->No 1->Yes |
| Temperature | 357 | -500 | 1000 | 20 | no | Sensor temperature(degrees Celsius) |
|------------------------------------------------------------------------------------------------------------------------------|
Find best bandwidth
|---------------------------------------------------------------------------------------------------------------------------------|
| BW [%] | Frame duration [ms] |
|---------------------------------------------------------------------------------------------------------------------------------|
| 40% | 389 84 73 84 82 82 82 82 81 83 82 82 82 82 82 82 82 82 82 82 |
| 45% | 60 73 73 73 71 73 74 71 73 75 73 73 73 73 71 74 73 73 73 73 |
| 50% | 54 63 67 66 66 65 66 65 66 63 68 65 65 65 65 66 65 64 67 66 |
| 55% | 50 57 61 59 62 56 60 59 59 59 59 60 60 59 59 59 59 59 59 59 |
| 60% | 42 53 56 55 54 54 55 55 54 54 55 52 56 55 54 54 55 54 55 54 |
| 65% | 37 50 52 50 52 50 50 50 50 50 49 51 50 50 50 50 50 50 49 52 |
| 70% | 35 47 45 47 47 47 48 49 47 42 48 43 47 49 47 47 48 48 47 43 |
| 75% | 31 50 38 46 46 39 47 40 46 46 39 46 46 37 45 43 46 45 39 47 |
| 80% | 25 42 45 40 37 45 35 41 44 43 37 38 47 39 39 39 49 33 39 41 |
| 85% | 28 43 36 38 43 36 36 42 36 37 41 39 38 38 38 36 38 45 36 36 |
| 90% | 21 40 39 34 35 37 38 35 38 35 35 38 39 36 35 35 36 38 35 33 |
| 95% | 22 36 36 34 33 33 38 36 35 34 36 31 29 37 32 37 36 35 35 34 |
| 100% | 15 35 37 31 34 30 34 32 35 34 32 33 32 33 32 34 32 33 33 33 |
|---------------------------------------------------------------------------------------------------------------------------------|
Best bandwidth is 100%, it has 31.1 FPS
$ asitest HighSpeedMode 1
Camera Found!
...
Set 'HighSpeedMode' to 1
Camera Options
|------------------------------------------------------------------------------------------------------------------------------|
| Option Name | Value | Min | Max | Default | Auto | Description |
|------------------------------------------------------------------------------------------------------------------------------|
| Gain | 0 | 0 | 510 | 210 | no | Gain |
| Exposure | 1000 | 32 | 2000000000 | 10000 | no | Exposure Time(us) |
| Offset | 10 | 0 | 600 | 10 | no | offset |
| BandWidth | 100 | 40 | 100 | 50 | no | The total data transfer rate percentage |
| Flip | 0 | 0 | 3 | 0 | no | Flip: 0->None 1->Horiz 2->Vert 3->Both |
| AutoExpMaxGain | 255 | 0 | 510 | 255 | no | Auto exposure maximum gain value |
| AutoExpMaxExpMS | 30000 | 1 | 60000 | 100 | no | Auto exposure maximum exposure value(unit ms) |
| AutoExpTargetBrightness | 100 | 50 | 160 | 100 | no | Auto exposure target brightness value |
| HardwareBin | 0 | 0 | 1 | 0 | no | Is hardware bin2:0->No 1->Yes |
| HighSpeedMode | 1 | 0 | 1 | 0 | no | Is high speed mode:0->No 1->Yes |
| Temperature | 363 | -500 | 1000 | 20 | no | Sensor temperature(degrees Celsius) |
|------------------------------------------------------------------------------------------------------------------------------|
Find best bandwidth
|---------------------------------------------------------------------------------------------------------------------------------|
| BW [%] | Frame duration [ms] |
|---------------------------------------------------------------------------------------------------------------------------------|
| 40% | 312 36 42 47 37 45 37 47 38 44 37 47 37 49 40 33 44 47 37 46 |
| 45% | 20 45 37 35 35 37 40 29 37 39 37 42 36 35 37 40 37 35 36 38 |
| 50% | 18 36 37 29 36 34 33 34 33 33 33 34 32 35 32 30 35 29 39 33 |
| 55% | 12 35 32 30 27 32 34 30 31 30 25 32 34 30 26 32 28 30 33 32 |
| 60% | 10 30 26 28 33 27 28 23 29 31 26 29 30 23 30 28 29 26 30 28 |
| 65% | 7 34 22 23 25 28 24 29 27 21 26 26 26 25 29 26 21 26 25 29 |
| 70% | 4 27 27 22 23 22 24 24 25 22 24 24 24 27 21 26 23 24 23 24 |
| 75% | 4 29 19 21 21 23 25 22 22 22 23 24 23 23 22 22 20 25 21 22 |
| 80% | 9 17 21 20 20 21 22 22 21 22 21 19 18 23 19 22 21 21 19 22 |
| 85% | 7 21 21 19 19 17 19 20 18 20 20 21 18 21 20 19 21 21 16 19 |
| 90% | 8 20 17 21 20 16 16 19 20 18 20 20 18 20 15 16 20 18 21 20 |
| 95% | 6 16 641 21 15 24 18 14 15 21 15 18 18 15 19 16 20 17 15 20 |
| 100% | 5 16 13 15 18 18 13 18 16 19 18 13 18 17 16 19 16 15 16 19 |
|---------------------------------------------------------------------------------------------------------------------------------|
Best bandwidth is 100%, it has 63.1 FPS
I am happy to take some helpful tips.
Are libASICamera2 sources available?
Now I'm starting to parse USB packets in Wireshark to restore libASICamera2 sources.
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- Paweł Soja
-
Topic Author
- Offline
- Junior Member
-
- Posts: 28
- Thank you received: 17
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