PhotoMetrix UVC

Colorimetric analysis in mobile devices using USB Video Camera

GHELFER.NET Inc. · com.serenegiant.usbcameratest

Not rated yet 100+ downloads v1.0.8 4.4 MB Android 4.0+ PEGI 3 · Everyone

Download APK 4.4 MB All versions

At a glance

Latest version: v1.0.8 (9)
Updated: May 20, 2024 (2 years ago)
APK size: 4.4 MB
Requires: Android 4.0+ (API 14)
CPU support: x86 32-bit, ARM (legacy), ARM 32-bit, MIPS
Category: Education (app)
Listed since: Jan 16, 2021 (at least)
Permissions: 6 (3 sensitive)
Website: ghelfer.net
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

PhotoMetrix UVC is an app by GHELFER.NET Inc. in the Education category, listed since at least January 2021. It includes native code only for x86 32-bit, ARM (legacy), ARM 32-bit and MIPS, so it won't run on 64-bit-only phones such as recent Pixels.

It asks for 6 permissions, 3 of them sensitive: camera, read shared storage and modify shared storage.

What's new in v1.0.8

Minor bugs fixed

Description

From the listing uploaded by “appupdater”.

Using USB Video Camera this app employs Single Linear Correlation technics for univariate analysis, Principal Component Analysis (PCA) and HCA for multivariate exploratory analysis and Partial Least Squares (PLS) form multivariate analysis. The image data are acquired using the device main camera and converted in RGB histograms. In addition, apart color channels of RGB, HSV, HSL and HSI systems are used during the univariate and multivariate processes. It is possible to send by e-mail the image data, analysis data and charts. In order to validate the obtained results, the same sets of data were tested using Microsoft Excel© and ChemoStat©. The results in both applications coincided in various combinations. This app calculates: eigenvalues, eigenvectors, scores, loadings, latent variable, RMSEP, REMSEC using Singular Value Decomposition in Multivariate Analysis. Also calculates: slope (span), intercept (off-set) and regression (Pearson product-moment correlation coefficient) in Univariate Calibration Analysis. Also available in iOS and Windows Phone. http://dx.doi.org/10.5935/0103-5053.20160182

Security & authenticity

Security rating: Trusted

Signing certificate

Certificate issued to “-” Not the developer's name (“GHELFER.NET Inc.”). Names in certificates can't be verified, so this alone proves nothing.

Store checks and file details

Developer signature verified May 20, 2024
Signed byCN=Gilson Helfer, OU=-, O=-, L=Santa Cruz do Sul, ST=RS, C=55
Signing certificate (SHA-1)FB:13:7B:CB:95:C2:48:AF:9C:A9:77:6D:91:03:1F:F9:6C:3F:2F:39
File MD510eeba0b4fa7e1478f46050b4c552442
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (6)

PhotoMetrix UVC requests 6 permissions, 3 of them sensitive.

Camera Sensitive android.permission.CAMERA
Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Full network access android.permission.INTERNET
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Camera android.hardware.camera
Camera autofocus android.hardware.camera.autofocus
Basic touch input android.hardware.faketouch
Landscape screen android.hardware.screen.landscape
Portrait screen android.hardware.screen.portrait
Wi-Fi android.hardware.wifi

PhotoMetrix UVC APK: questions and answers

Can I install this APK over the version I already have?

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is the PhotoMetrix UVC APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. After downloading, check that the file's MD5 is 10eeba0b4fa7e1478f46050b4c552442.