Dual-fisheye Images With THETA V Plug-in


Thanks for the updates. So it sounds like I can’t take a dual fisheye using a remote capture command.

What about this idea… I turn the camera on and then put it into plugin-mode (can that be done remotely?). In plugin mode it will take a picture right away. It then falls into a never-ending loop which monitors the image database for the presence of any items. I know I can grab and delete an image from the ricoh remotely even with a plugin active. Whenever I need a picture, I will delete whatever picture is in the database. The plugin will then see the database is empty then it takes another picture. I can then grab that image, and wait to delete it until I next want an image.

Does that seem like it has a prayer of working?

Thanks for all your help with this, you have saved me a huge amount of time not following useless trails.


I don’t think you can turn the camera on remotely and then put it into plug-in mode.

If the user can manually put the camera into plug-in mode, you should be able to put the plug-in into the loop you describe and have it check for the image and then take the dual-fisheye. You can then send the image to another source using Wi-Fi, BLE, or a cable.

BTW, I got the Ethernet working with a cheap $14 adapter. However, I think the battery is still draining. I have not done a long-term test yet. I’m also not taking a dual-fisheye picture with this implementation.


Updated Dual-Fisheye apk

There is a new version of the apk, built on 8/6/2018.

It’s available in the Plug-in Application Development Guide

  1. app name should now be DualFisheye Plugin
  2. package name should now be com.hirota41.dualfisheye_plugin
  3. Stability improvement on the latest FW
  4. Reduced interval for 1 shot mode (light blue mode)

This apk is being submitted to the THETA Store, but developers can use it now during the assessment and quality control process. You need to have an unlocked camera, which is free to get unlocked if you join the partner program, which is also free to join right now.


Sorry, bad grammar on my part. I meant that I turn the camera on physically and remotely put it into plug in mode. Even if I can’t do that, if what I described should work then it would just be the initial startup where the user would have to do something manually.

Thanks for the ethernet info. I’m going to buy one now.

Thanks for the info about the updated apk, I will also download that now.

I’ll update when I have success with my idea.


@jcasman, do you know if the camera can be put into plug-in mode with the Wi-Fi API or can it be set to boot automatically into plug-in mode? If you don’t know, can you ask your contact at Ricoh?

I seem to remember a discussion about this, but I don’t remember the answer.

@BrianKitchen10 I sent you the direct link to download the updated apk.


Installed DualFisheye Plugin, now with correct application name.


Must set permissions manually using Vysor



Single and triple shots work great.


HDR test with Picturenaut. 3 image test using default settings for new dual-fisheye plug-in



Generates a HDR image from multiple photographs ....
MKHDRI - Version 1.33.0434  (2005 - 2011)

locale is : English_United States.1252
file 'D:\Documents\plugin-samples\dual-fisheye\sample images\20180806141130.JPG' (8-BIT 5792x2896) opened
file 'D:\Documents\plugin-samples\dual-fisheye\sample images\20180806141129.JPG' (8-BIT 5792x2896) opened
file 'D:\Documents\plugin-samples\dual-fisheye\sample images\20180806141128.JPG' (8-BIT 5792x2896) opened
EV : 1.321928
estimate brightness transfer functions ...
estimate camera curve for channel 1 ...
estimate camera curve for channel 2 ...
estimate camera curve for channel 3 ...
combining images ...
dynamic range : 77.864608
true EV span  : 6.282896
max radiance  : 1.16555


Converted of picturenaut from tiff to jpg format.
Using PTGui for the stitch test. Note that stitching is not perfect with PTGui and is shown only as a rough test. I’ll repeat the HDR test with Ichi’s stitching library when I receive the updated version.


Please note that I confirmed that the camera cannot be powered by the Ethernet USB OTG adapter. This may limit the usefulness of the Ethernet technique, depending on your application. The camera will stop working when the rechargeable battery runs out.

@jcasman is checking to see if the camera can be put into plug-in mode using an API call or boot setting.


Hi, @codetricity. Thanks a lot for the info of updates.
Deleting old plugin is needed to update the dual-fisheye plugin?


Yes, please delete the old plug-in first. Remember to manually set the permissions.


Testing Ichi’s Stitching Library on Mobile Phone

For this test, I used the following procedure:

  1. took three images using Ichi’s DualFisheye Plug-in
  2. downloaded images to my Windows 10 computer and used Picturenaut to merge the 3 files into a single HDR image
  3. moved merged file back to mobile phone to stitch it with Ichi’s mobile app
  4. moved stitched file back to my Windows 10 computer to view in the Ricoh Desktop application

The above workflow is for the test only. Actual workflow in the field will be different.


On the camera, the stitched pictures are stored in the folder MiSphereConverter


Stitch looks good, but I need to work on the manual lens calibration.

BTW, the stitching application is still available for Android. It has a watermark on the free demo version. Link to download the demo version is in the plug-in developer guide.


7 Image HDR

Modified Exposure Compensation to use 7 images from with values of: -2.0, -1.3, -0.7, 0.0, 0.7, 1.3, 2.0

Using Picturenaut to combine images


Merged Image

Stitched Image



Thanks @codetricity, 5.4k new feature also is rolling out now! I’m very busy.


Do you have more information on the 5.4K video feature?

I do not see the information here:



Here, it is. @codetricity

Theta V resolution increased to 5.4K

SV trusted account is necessary to access the Street View News board. If you have enough time, please check the SV Newsletter in August.



Hi, @codetricity
Issue again. It happened on shooting with updated Dual-Fisheye plugin bracketing mode.(I used mode buttom press on camera)


However, I can’t reproduce the issue now. Please have a look.


Thanks for the information. @jcasman and I tested the plug-in yesterday using a 7-shot modification. We were not able to replicate the problem, but we will keep testing this.

We are planning to use the source code of the dual-fisheye plug-in as part of a workshop in San Francisco on August 30 from 6-8pm.


Hi, @codetricity,
I successfully got “Very Good” result with PTGui pro ver.11. It would be better to convert the images into Single-fisheye images.(Crop & Rotate) 4 shots 90 degrees apart definitely will improve image quality.


You can see the stitched images in Google Street View.



This is a great add. Thanks for sharing it.

How are you cropping and rotating the images? Are you using something like Photoshop? Or, are you using something like ImageMagick in an batch processing script?

I’m going to add this to the Plug-in Developer Guide that we’ll be using in the August 30 microconference in San Francisco. I will provide attribution to you.

I’m also trying to learn more about HDRi prior to the microconference. One thing I learned is that HDRi files are stored in one of three formats: Radiance RGBE, OpenEXR, or Floating point TIFF/PSD.

Will now stitch each individual image and then attempt to combine.

Ichi’s mobile app can stitch all 7 images with a single batch process.

Saving in OpenEXR format using free Picturenaut


Single HDRi file is now 96 MB in size.


Using Photoshop HDR Pro

Imported 7 images into Photoshop

Testing Scott5 preset



Testing Adobe Camera Raw (ACR) 32 bit

viewed in Ricoh THETA Desktop Application

Unity Test using Look Dev View HDRI

Drag EXR file onto Unity.

Create a new material.

Texture Shape: Cube

Unity recommends using Specular Convolution, but it will blur the skybox.



Look Dev HDRI View

Diagonal Comparison View

Horizontal Comparision View

Simple Asset Test

With Specular Convolution


I just used GIMP to crop and rotate the images. Anyway,the batch processing script will be needed.;lol.

I’m also trying 7 image dual-fisheye shooting. I downloaded the ZIP file from your GitHub site. Is it app-debug.apk? And can I install it in the same camera the same way as 3 HDR version?