The camera shooting interval is inconsistent with the time interval of the saved images？

[Kaiqi-Chen]

Hi, everyone
I use windows 10 and Airsim1.6 to record the datasets, but I encountered a problem: I set the camera to 0.033 in airsim's settings.json, and the image interval of the saved image is not 0.033。

settings.json:
`{
"SeeDocsAt": "https://github.com/Microsoft/AirSim/blob/master/docs/settings.md",
"SettingsVersion": 1.2,
"SimMode": "Car",
"ClockSpeed": 1.0,
"SpeedUnitFactor": 1.0,
"SpeedUnitLabel": "m/s",
"Recording": {
"RecordOnMove": false,
"RecordInterval": 0.033,
"Cameras": [
{
"CameraName": "0",
"ImageType": 0,
"PixelsAsFloat": false,
"VehicleName": "",
"Compress": true
},
{
"CameraName": "0",
"ImageType": 1,
"PixelsAsFloat": false,
"VehicleName": "",
"Compress": true
},
{
"CameraName": "0",
"ImageType": 7,
"PixelsAsFloat": false,
"VehicleName": "",
"Compress": true
}
]
},
"CameraDefaults": {
"CaptureSettings": [

  {
    "ImageType": 0,
    "Width": 640,
    "Height": 480,
    "FOV_Degress": 120,
    "TargetGamma": 2.0
  },
  {
    "ImageType": 1,
    "Width": 640,
    "Height": 480,
    "FOV_Degress": 120,
    "TargetGamma": 2.0
  },
  {
    "ImageType": 7,
    "Width": 640,
    "Height": 480,
    "FOV_Degress": 120,
    "TargetGamma": 2.0
  }
]

},
"SubWindows": [
{
"WindowID": 0,
"CameraName": "0",
"ImageType": 1,
"VehicleName": "",
"Visible": false
},
{
"WindowID": 1,
"CameraName": "0",
"ImageType": 0,
"VehicleName": "",
"Visible": false
},
{
"WindowID": 2,
"CameraName": "0",
"ImageType": 5,
"VehicleName": "",
"Visible": false
}
]
}
`

Some key codes about saving images：
`
responses = client.simGetImages([
airsim.ImageRequest("0", airsim.ImageType.Infrared, False, False),
airsim.ImageRequest("0", airsim.ImageType.Scene, False, False),
#airsim.ImageRequest("0", airsim.ImageType.DepthVis, True),
airsim.ImageRequest('0', airsim.ImageType.DepthPlanner, True, False)
])
im=responses[0]
RgbIm=responses[1]
DepIm=responses[2]

        # transform the data type sim.ImageResponse to numpy array
        im_3d = np.fromstring(im.image_data_uint8, dtype=np.uint8)
        segmentimg = im_3d.reshape(im.height, im.width, 3)
        img_Rgb_3d = np.fromstring(RgbIm.image_data_uint8, dtype=np.uint8)
        # get rgb images and gray scale images
        img_Rgb_3d = img_Rgb_3d.reshape(RgbIm.height, RgbIm.width, 3)

        img_depth_planar = np.array(DepIm.image_data_float).reshape(DepIm.height, DepIm.width)
        img_depth_vis = img_depth_planar / 100
        img_depth_vis[img_depth_vis > 1] = 1.
        img_depth_vis = (img_depth_vis * 65535).astype(np.uint16)  #65536  255

        time_stamp_infrared = str(responses[0].time_stamp)
        time_stamp_rgb=str(responses[1].time_stamp)
        time_stamp_depth = str(responses[2].time_stamp)

        time_stamp_infrared = time_stamp_infrared[0:10] + "." + time_stamp_infrared[10:16]
        time_stamp_rgb = time_stamp_rgb[0:10] + "." + time_stamp_rgb[10:16]
        time_stamp_depth = time_stamp_depth[0:10] + "." + time_stamp_depth[10:16]

        f_time = open('J:/pycharmprojects/airsim/VOC-Airsim/Datasets/times.txt', 'a')
        **f_time.write(time_stamp_rgb + "\n")**


        #  write rgb.txt /depth.txt  /associate.txt
        **f_rgb = open('J:/pycharmprojects/airsim/VOC-Airsim/Datasets/rgb.txt', 'a')
        f_rgb.write(time_stamp_rgb+" rgb/"+img_name +"\n")
        f_depth = open('J:/pycharmprojects/airsim/VOC-Airsim/Datasets/depth.txt', 'a')
        f_depth.write(time_stamp_depth + " depth/" + dep_name + "\n")**
        f_ass = open('J:/pycharmprojects/airsim/VOC-Airsim/Datasets/associate.txt', 'a')
        f_ass.write(time_stamp_rgb+" rgb/"+img_name+" "+time_stamp_depth + " depth/" + dep_name + "\n")
        f_infrared = open('J:/pycharmprojects/airsim/VOC-Airsim/Datasets/infrared.txt', 'a')
        f_infrared.write(time_stamp_infrared + " infrared/" + infrared_name + "\n")

`
times.txt：
1666231126.984170
1666231127.284790
1666231127.461651
1666231127.644370
1666231127.811822
1666231127.983363
1666231128.152054
1666231128.316744
1666231128.481791
1666231128.658419

rgb.txt:
1666231126.984170 rgb/000000.png
1666231127.284790 rgb/000001.png
1666231127.461651 rgb/000002.png
1666231127.644370 rgb/000003.png
1666231127.811822 rgb/000004.png
1666231127.983363 rgb/000005.png
1666231128.152054 rgb/000006.png
1666231128.316744 rgb/000007.png
1666231128.481791 rgb/000008.png
1666231128.658419 rgb/000009.png
1666231128.823299 rgb/000010.png
1666231128.989749 rgb/000011.png
1666231129.147758 rgb/000012.png

depth.txt:
1666231126.985175 depth/000000.png
1666231127.285807 depth/000001.png
1666231127.462377 depth/000002.png
1666231127.645072 depth/000003.png
1666231127.812604 depth/000004.png
1666231127.984161 depth/000005.png
1666231128.152761 depth/000006.png

So I don't know where I am going wrong.

Thanks in advance guys!!!!!