Digital Image Analysis using R-Project-based EBImage, randomForest, DT, and bslib - A Web app (R-Project-Shiny-based)

This digital image analysis has been developed using R-Project (4.6.1), RStudio 2026.08.1 Build 195. It is made using packages, including shiny, EBImage, randomForest, DT, and bslib. NOTE: Try to remain SLOW with the change in metrics using sliders as it may take large time to process the image. If it takes long, allow it to settle and start working after sometime. KEEP THE IMAGE BELOW 500 x 500 pixels.

Powered by Allaire, J., Sievert, C., Dervieux, C., Xie, Y., McPherson, J., Allen, A., Wickham, H., Atkins, A., & Hyndman, R. (2024). bslib: Custom Bootstrap 'Sass' Themes for 'shiny' and 'rmarkdown' (R package version 0.8.0) [Computer software]. https://CRAN.R-project.org/package=bslib Breiman, L., Cutler, A., Liaw, A., & Wiener, M. (2022). randomForest: Breiman and Cutler's Random Forests for Classification and Regression (R package version 4.7-1.1) [Computer software]. https://CRAN.R-project.org/package=randomForest Chang, W., Cheng, J., Allaire, J., Sievert, C., Schloerke, B., Xie, Y., Allen, A., McPherson, J., Dipert, A., & Borges, B. (2024). shiny: Web Application Framework for R (R package version 1.9.1) [Computer software]. https://CRAN.R-project.org/package=shiny Pau, G., Fuchs, F., Sklyar, O., Boutros, M., & Huber, W. (2010). EBImage—an R package for image processing with applications to cellular phenotypes. Bioinformatics, 26(7), 979–981. https://doi.org/10.1093/bioinformatics/btq046 Xie, Y., Cheng, J., & Tan, X. (2024). DT: A Wrapper of the JavaScript Library 'DataTables' (R package version 0.33) [Computer software]. https://CRAN.R-project.org/package=DT Terms of Use and Disclaimer: This tool is for educational purposes only. The author assumes no liability for inaccuracies or decisions made based on this output. No data is stored on our servers. The Image Analysis Toolkit provided on this site is an open-source tool intended for exploratory image analysis. Users are encouraged to verify all results with primary software and experts before publication. The owner of JeePakistan.blogspot.com is not responsible for any research outcomes derived from this tool. ===========================

NOTE: Uploaded on 22/09/2026

Stroop Memory Test Challenge

Stroop Test Challenge

The Stroop effect is a classic cognitive psychology phenomenon where the time it takes to name the color of a word is longer when the color of the text conflicts with the meaning of the word. For example, the word "RED" printed in blue ink requires more mental effort to identify correctly than a word printed in a matching color.

Test your cognitive control and reaction time. When you see a color word on the screen, ignore what the word says and click the button that matches the COLOR of the text itself. Good luck!

⚡ Select Speed

Save results to device

🎮 Start Game

Select your preferred speed above, then click Start to begin. Answer 10 questions!

👇 Click "Start Test" to begin

Question: 0/10

Score: 0

2.0s

Click the color button that matches the TEXT COLOR, not the word!

BLUE

📊 Your Results

Score

0

Accuracy

0%

Avg. Reaction Time

0ms

Best Time

0ms

📈 Your History

Date	Speed	Score	Accuracy	Avg Time
No saved results yet

A mini game for Crisis Command, and leadership and decision-making trainer

Leadership & Decision-Making Trainer

Crisis Command

A scenario-based simulator for practicing crisis response, conflict resolution and leadership judgment under time pressure. Every decision trades off between public trust, resources and team morale — exactly like the real thing.

How to play

1. Pick a role and difficulty below, then hit "Begin Simulation."
2. Crises arrive one at a time. Read the situation report and choose one of the response options before the countdown ring closes.
3. Each choice shifts three meters — Public Trust, Resources, Team Morale — shown live on the dashboard. There's rarely a free option: strengthening one often costs another.
4. Letting the timer run out counts as indecision and always costs you — in a real crisis, no decision is still a decision.
5. Survive all rounds with your meters above zero to complete the simulation. Your Leadership Score and decision log are tallied below the game as you play.

Role Emergency Manager Corporate CEO City Mayor Field Commander

Difficulty Trainee (25s / gentle swings) Manager (15s / standard) Director (8s / high stakes)

Session length Short — 6 crises Standard — 8 crises Extended — 10 crises

Standing by—

Awaiting deployment

Configure your role and difficulty above, then begin the simulation to receive your first situation report.

Performance Statistics

Leadership Score

0

Decisions Made

0

Avg Response Time

0.0s

Crises Resolved

0 / 0

Sound Decisions

0%

Timeouts

0

--:--Decision log will appear here once the simulation begins.

Letter Span Memory Test and Game

Cognitive Span Test

Letter Span

What this measures. Letter span is a classic test of short‑term (working) memory. You'll see a string of letters flash one at a time, then have to type them back. Get it right and the string grows by one letter; get it wrong and the session ends, recording the longest string you handled — your span.

Forward vs. backward. Forward span asks for the letters in the order you saw them. Backward span asks for them in reverse order, which leans harder on manipulating information in your head, not just holding it — most people score noticeably lower on it.

Set your options below, then press Begin Session. Your results and history are kept at the bottom of the page.

1Settings

Mode

Type the letters in the order shown.

Start length

4

Letters in the first sequence (2–9).

Show speed

How long each letter stays on screen.

Exclude confusions

On

Excluding: I, L, O, Q, S, Z

2Test

Ready when you are Choose your settings above, then press Begin Session.

Press Enter to submit your answer. Letters are automatically capitalized.

3Stats & results

–

Best forward span

–

Best backward span

0

Sessions played

–

Overall accuracy

Current session ladder

No session in progress yet.

Session history

When	Mode	Start	Speed	A–Z set	Span reached	Trials
No sessions yet — your results will appear here.

Digit Span Memory Game

SPAN // digit recall instrument

READY

Mode

Starting length

3

Speed

Enter the sequence

Session ended

0

longest span recalled correctly

Session history

No sessions recorded yet in this browser.

Digits are generated locally each round. Stats are stored in this browser only.