Practice Exercises & Case Studies
## PRACTICE EXERCISES
### Exercise 1: Basic Detail Identification
**SCENARIO:**
You're provided with a photo of a street scene. Practice systematic analysis.
**YOUR TASKS:**
1. **Grid Analysis:**
- Divide image into 9 sections mentally
- Document what's visible in each section
- Time yourself - aim for 15 minutes
- Don't skip any section
2. **Detail Inventory:**
- List every readable sign or text
- Count visible people
- Identify all vehicles
- Note weather/environmental conditions
- Document time indicators (if any)
3. **Questions Development:**
- What questions does this photo raise?
- What would you need to verify?
- What additional photos would help?
- What research would you conduct?
**SKILLS PRACTICED:**
- Systematic observation
- Complete documentation
- Question formulation
- Research planning
---
### Exercise 2: Shadow Time Analysis
**SCENARIO:**
Photo shows person standing next to a door at unknown time of day.
**MEASUREMENTS PROVIDED:**
- Person height in photo: 180 pixels
- Person shadow length: 270 pixels
- Known: Person is 6 feet tall
- Known: Photo taken on June 15 in Chicago
**YOUR TASKS:**
1. **Calculate Shadow Ratio:**
- Shadow length / Person height = ?
- What does this ratio suggest about time of day?
2. **Shadow Direction Analysis:**
- Shadow points northeast in photo
- What does this tell you about approximate time?
- Morning or afternoon?
3. **Refine Estimate:**
- Use sun calculator for June 15 in Chicago
- Input shadow angle and ratio
- Determine approximate time range
- Express confidence level
4. **Verification Strategy:**
- What other evidence would confirm time?
- What might disprove your estimate?
- How confident should you be?
**SKILLS PRACTICED:**
- Shadow analysis
- Time estimation
- Tool usage (sun calculators)
- Confidence assessment
---
### Exercise 3: Location Identification Challenge
**SCENARIO:**
Photo shows brick building with no obvious signs. Must identify location.
**VISIBLE CLUES:**
- Red brick construction
- Specific window arch style
- Green awning over doorway
- Partial street sign: "...ison"
- Vehicle with Illinois plate visible
- Tree species: Oak (common in Midwest)
**YOUR TASKS:**
1. **Clue Analysis:**
- What does brick color/style suggest?
- What streets end in "...ison"?
- What does Illinois plate tell you?
- How does tree species help?
2. **Research Plan:**
- What would you search first?
- What databases would you use?
- How would you verify findings?
3. **Reverse Image Search:**
- Would this help? Why or why not?
- What might it reveal?
- What are limitations?
4. **Documentation:**
- How would you document your findings?
- What confidence level would you assign?
- What would prove location definitively?
**SKILLS PRACTICED:**
- Clue identification
- Location research
- Research planning
- Verification methods
---
### Exercise 4: Photo Authenticity Assessment
**SCENARIO:**
Photo provided of "UFO sighting" - assess if it's authentic or manipulated.
**YOUR ANALYSIS CHECKLIST:**
1. **Lighting Consistency:**
- Does lighting match across entire image?
- Are shadows consistent with light source?
- Any impossible lighting scenarios?
- Color temperature consistent?
2. **Perspective Analysis:**
- Do all objects follow same perspective?
- Vanishing points align correctly?
- Scale relationships make sense?
- Camera angle consistent throughout?
3. **Edge Examination:**
- Sharp edges where should be soft?
- Halos around any objects?
- Unnatural transitions?
- Color fringing visible?
4. **Metadata Check:**
- EXIF data present and consistent?
- Edit history in metadata?
- Camera information makes sense?
- Date/time plausible?
5. **Compression Analysis:**
- Uniform compression across image?
- Some areas more compressed than others?
- Artifacts suggesting composition?
6. **Final Assessment:**
- List evidence FOR authenticity
- List evidence AGAINST authenticity
- Assign probability (genuine vs. fake)
- Explain reasoning
**SKILLS PRACTICED:**
- Manipulation detection
- Critical analysis
- Evidence evaluation
- Confidence assessment
---
### Exercise 5: Missing Person Last Photo Analysis
**SCENARIO:**
Last known photo of missing person taken at party. Extract all possible information.
**PHOTO SHOWS:**
- Subject (female, 20s) with drink
- Three other people partially visible
- Indoor location, evening
- Wall clock shows 11:47
- Subject wearing specific clothing
- Decorations suggest birthday party
**YOUR COMPREHENSIVE ANALYSIS:**
1. **Subject Documentation:**
- Complete clothing description
- Jewelry/accessories visible
- Hair and appearance details
- Emotional state assessment
- Physical condition indicators
2. **Companions Analysis:**
- How many people visible?
- Relationships to subject (if determinable)
- Their attention/interaction with subject
- Anyone looking unusual or suspicious?
3. **Location Analysis:**
- Type of venue (house, bar, restaurant?)
- Distinctive features visible
- Identifiable details
- Potential witness areas
4. **Time Verification:**
- Clock shows 11:47 - verify if accurate
- Does this match witness statements?
- Party environment consistent with time?
- Any other time indicators?
5. **Investigative Questions:**
- Who took this photo?
- Were there other photos from same event?
- Who are the other people visible?
- What happened after photo was taken?
- Where exactly was this taken?
6. **Action Items:**
- What should be investigated first?
- Who should be interviewed?
- What verification is needed?
- What other photos might exist?
**SKILLS PRACTICED:**
- Comprehensive documentation
- Detail extraction
- Question formulation
- Investigation planning
---
## CASE STUDIES
### Case Study 1: The Parking Lot Incident
**BACKGROUND:**
Hit-and-run accident in parking lot. Driver fled. Security camera captured image.
**PHOTO ANALYSIS REVEALED:**
**Vehicle Identification:**
- Partial license plate visible: "...7K3"
- Make/model identified from body style: 2015-2017 Honda Civic
- Color: Dark blue or black (hard to tell in B&W camera)
- Damage to front right fender visible
- Distinctive aftermarket wheels
**Environmental Details:**
- Timestamp: 3:47 PM
- Weather: Clear (no rain visible)
- Other vehicles nearby for reference
- Store signs visible establishing location
**Additional Evidence:**
- Tire tracks in puddle showing tread pattern
- Debris left at scene
- Direction vehicle was traveling
**OUTCOME:**
- DMV search for Honda Civics with plates ending "7K3" in area
- Cross-referenced with body shops reporting similar damage
- Vehicle located and driver identified
- Photo analysis provided critical starting point
**LESSONS:**
- Even partial information can be valuable
- Multiple details combine to narrow search
- Environmental context supports investigation
- Systematic analysis reveals more than quick glance
---
### Case Study 2: The Mistaken Timeline
**BACKGROUND:**
Missing person case. Witness claimed they saw subject at 2 PM based on photo.
**ORIGINAL ASSUMPTION:**
Photo timestamp corrupted, but witness "remembered" it was around 2 PM.
**SHADOW ANALYSIS REVEALED:**
**Evidence:**
- Subject standing next to 6-foot door
- Shadow measured 3x subject height
- Shadow direction pointed northwest
- Date: March 15 (known)
- Location: Denver, Colorado (known)
**Analysis:**
- Shadow ratio of 3:1 indicates sun very low
- Northwest shadow direction = late afternoon/evening
- Sun calculator for Denver on March 15
- Shadow angle and ratio = approximately 6:45 PM
**VERIFICATION:**
- Other photos from same event showed dusk lighting
- Timestamp on another camera: 6:52 PM
- Witness "2 PM" memory was incorrect
**IMPACT:**
- Investigation shifted to different time period
- New witnesses found for correct time
- Subject's actual timeline reconstructed
- Case eventually resolved
**LESSONS:**
- Memory is unreliable
- Physical evidence (shadows) doesn't lie
- Simple analysis can correct major errors
- Always verify assumptions
---
### Case Study 3: The Background Detail
**BACKGROUND:**
Person of interest claimed to be out of town during incident. Photo suggested otherwise.
**PHOTO SHOWED:**
- Subject at restaurant, claimed to be 200 miles away
- Photo posted to social media next day
- Subject claimed it was from previous visit
**ANALYSIS UNCOVERED:**
**Background Television:**
- TV visible in background showing sports game
- Score and quarter visible on screen
- Game identified: specific NBA game
- Date of game: day of incident, not earlier
**Additional Evidence:**
- Newspaper on adjacent table (date visible when enhanced)
- Calendar on wall showing current month
- Seasonal decorations consistent with actual date
- Weather through window matching day of incident
**RESULT:**
- Alibi disproven through background details
- Subject admitted lying about whereabouts
- Background analysis more valuable than main subject
**LESSONS:**
- Background often more important than foreground
- Systematic analysis reveals hidden details
- Multiple small details create strong evidence
- Don't focus only on main subject
---
### Case Study 4: The Historical Location
**BACKGROUND:**
1960s photo of missing person at unknown location. Family wanted location identified.
**PHOTO SHOWED:**
- Person outside brick building
- Partial business sign visible: "...arber Shop"
- Specific window arch style
- Vintage car in background (model identifiable)
**INVESTIGATION PROCESS:**
**Step 1 - Architecture Research:**
- Window arch style researched
- Matched to 1920s Chicago construction
- Specific to certain neighborhoods
**Step 2 - Business Research:**
- Historical business directories
- Barbershops in identified n
## PRACTICE EXERCISES
### Exercise 1: Basic Detail Identification
**SCENARIO:**
You're provided with a photo of a street scene. Practice systematic analysis.
**YOUR TASKS:**
1. **Grid Analysis:**
- Divide image into 9 sections mentally
- Document what's visible in each section
- Time yourself - aim for 15 minutes
- Don't skip any section
2. **Detail Inventory:**
- List every readable sign or text
- Count visible people
- Identify all vehicles
- Note weather/environmental conditions
- Document time indicators (if any)
3. **Questions Development:**
- What questions does this photo raise?
- What would you need to verify?
- What additional photos would help?
- What research would you conduct?
**SKILLS PRACTICED:**
- Systematic observation
- Complete documentation
- Question formulation
- Research planning
---
### Exercise 2: Shadow Time Analysis
**SCENARIO:**
Photo shows person standing next to a door at unknown time of day.
**MEASUREMENTS PROVIDED:**
- Person height in photo: 180 pixels
- Person shadow length: 270 pixels
- Known: Person is 6 feet tall
- Known: Photo taken on June 15 in Chicago
**YOUR TASKS:**
1. **Calculate Shadow Ratio:**
- Shadow length / Person height = ?
- What does this ratio suggest about time of day?
2. **Shadow Direction Analysis:**
- Shadow points northeast in photo
- What does this tell you about approximate time?
- Morning or afternoon?
3. **Refine Estimate:**
- Use sun calculator for June 15 in Chicago
- Input shadow angle and ratio
- Determine approximate time range
- Express confidence level
4. **Verification Strategy:**
- What other evidence would confirm time?
- What might disprove your estimate?
- How confident should you be?
**SKILLS PRACTICED:**
- Shadow analysis
- Time estimation
- Tool usage (sun calculators)
- Confidence assessment
---
### Exercise 3: Location Identification Challenge
**SCENARIO:**
Photo shows brick building with no obvious signs. Must identify location.
**VISIBLE CLUES:**
- Red brick construction
- Specific window arch style
- Green awning over doorway
- Partial street sign: "...ison"
- Vehicle with Illinois plate visible
- Tree species: Oak (common in Midwest)
**YOUR TASKS:**
1. **Clue Analysis:**
- What does brick color/style suggest?
- What streets end in "...ison"?
- What does Illinois plate tell you?
- How does tree species help?
2. **Research Plan:**
- What would you search first?
- What databases would you use?
- How would you verify findings?
3. **Reverse Image Search:**
- Would this help? Why or why not?
- What might it reveal?
- What are limitations?
4. **Documentation:**
- How would you document your findings?
- What confidence level would you assign?
- What would prove location definitively?
**SKILLS PRACTICED:**
- Clue identification
- Location research
- Research planning
- Verification methods
---
### Exercise 4: Photo Authenticity Assessment
**SCENARIO:**
Photo provided of "UFO sighting" - assess if it's authentic or manipulated.
**YOUR ANALYSIS CHECKLIST:**
1. **Lighting Consistency:**
- Does lighting match across entire image?
- Are shadows consistent with light source?
- Any impossible lighting scenarios?
- Color temperature consistent?
2. **Perspective Analysis:**
- Do all objects follow same perspective?
- Vanishing points align correctly?
- Scale relationships make sense?
- Camera angle consistent throughout?
3. **Edge Examination:**
- Sharp edges where should be soft?
- Halos around any objects?
- Unnatural transitions?
- Color fringing visible?
4. **Metadata Check:**
- EXIF data present and consistent?
- Edit history in metadata?
- Camera information makes sense?
- Date/time plausible?
5. **Compression Analysis:**
- Uniform compression across image?
- Some areas more compressed than others?
- Artifacts suggesting composition?
6. **Final Assessment:**
- List evidence FOR authenticity
- List evidence AGAINST authenticity
- Assign probability (genuine vs. fake)
- Explain reasoning
**SKILLS PRACTICED:**
- Manipulation detection
- Critical analysis
- Evidence evaluation
- Confidence assessment
---
### Exercise 5: Missing Person Last Photo Analysis
**SCENARIO:**
Last known photo of missing person taken at party. Extract all possible information.
**PHOTO SHOWS:**
- Subject (female, 20s) with drink
- Three other people partially visible
- Indoor location, evening
- Wall clock shows 11:47
- Subject wearing specific clothing
- Decorations suggest birthday party
**YOUR COMPREHENSIVE ANALYSIS:**
1. **Subject Documentation:**
- Complete clothing description
- Jewelry/accessories visible
- Hair and appearance details
- Emotional state assessment
- Physical condition indicators
2. **Companions Analysis:**
- How many people visible?
- Relationships to subject (if determinable)
- Their attention/interaction with subject
- Anyone looking unusual or suspicious?
3. **Location Analysis:**
- Type of venue (house, bar, restaurant?)
- Distinctive features visible
- Identifiable details
- Potential witness areas
4. **Time Verification:**
- Clock shows 11:47 - verify if accurate
- Does this match witness statements?
- Party environment consistent with time?
- Any other time indicators?
5. **Investigative Questions:**
- Who took this photo?
- Were there other photos from same event?
- Who are the other people visible?
- What happened after photo was taken?
- Where exactly was this taken?
6. **Action Items:**
- What should be investigated first?
- Who should be interviewed?
- What verification is needed?
- What other photos might exist?
**SKILLS PRACTICED:**
- Comprehensive documentation
- Detail extraction
- Question formulation
- Investigation planning
---
## CASE STUDIES
### Case Study 1: The Parking Lot Incident
**BACKGROUND:**
Hit-and-run accident in parking lot. Driver fled. Security camera captured image.
**PHOTO ANALYSIS REVEALED:**
**Vehicle Identification:**
- Partial license plate visible: "...7K3"
- Make/model identified from body style: 2015-2017 Honda Civic
- Color: Dark blue or black (hard to tell in B&W camera)
- Damage to front right fender visible
- Distinctive aftermarket wheels
**Environmental Details:**
- Timestamp: 3:47 PM
- Weather: Clear (no rain visible)
- Other vehicles nearby for reference
- Store signs visible establishing location
**Additional Evidence:**
- Tire tracks in puddle showing tread pattern
- Debris left at scene
- Direction vehicle was traveling
**OUTCOME:**
- DMV search for Honda Civics with plates ending "7K3" in area
- Cross-referenced with body shops reporting similar damage
- Vehicle located and driver identified
- Photo analysis provided critical starting point
**LESSONS:**
- Even partial information can be valuable
- Multiple details combine to narrow search
- Environmental context supports investigation
- Systematic analysis reveals more than quick glance
---
### Case Study 2: The Mistaken Timeline
**BACKGROUND:**
Missing person case. Witness claimed they saw subject at 2 PM based on photo.
**ORIGINAL ASSUMPTION:**
Photo timestamp corrupted, but witness "remembered" it was around 2 PM.
**SHADOW ANALYSIS REVEALED:**
**Evidence:**
- Subject standing next to 6-foot door
- Shadow measured 3x subject height
- Shadow direction pointed northwest
- Date: March 15 (known)
- Location: Denver, Colorado (known)
**Analysis:**
- Shadow ratio of 3:1 indicates sun very low
- Northwest shadow direction = late afternoon/evening
- Sun calculator for Denver on March 15
- Shadow angle and ratio = approximately 6:45 PM
**VERIFICATION:**
- Other photos from same event showed dusk lighting
- Timestamp on another camera: 6:52 PM
- Witness "2 PM" memory was incorrect
**IMPACT:**
- Investigation shifted to different time period
- New witnesses found for correct time
- Subject's actual timeline reconstructed
- Case eventually resolved
**LESSONS:**
- Memory is unreliable
- Physical evidence (shadows) doesn't lie
- Simple analysis can correct major errors
- Always verify assumptions
---
### Case Study 3: The Background Detail
**BACKGROUND:**
Person of interest claimed to be out of town during incident. Photo suggested otherwise.
**PHOTO SHOWED:**
- Subject at restaurant, claimed to be 200 miles away
- Photo posted to social media next day
- Subject claimed it was from previous visit
**ANALYSIS UNCOVERED:**
**Background Television:**
- TV visible in background showing sports game
- Score and quarter visible on screen
- Game identified: specific NBA game
- Date of game: day of incident, not earlier
**Additional Evidence:**
- Newspaper on adjacent table (date visible when enhanced)
- Calendar on wall showing current month
- Seasonal decorations consistent with actual date
- Weather through window matching day of incident
**RESULT:**
- Alibi disproven through background details
- Subject admitted lying about whereabouts
- Background analysis more valuable than main subject
**LESSONS:**
- Background often more important than foreground
- Systematic analysis reveals hidden details
- Multiple small details create strong evidence
- Don't focus only on main subject
---
### Case Study 4: The Historical Location
**BACKGROUND:**
1960s photo of missing person at unknown location. Family wanted location identified.
**PHOTO SHOWED:**
- Person outside brick building
- Partial business sign visible: "...arber Shop"
- Specific window arch style
- Vintage car in background (model identifiable)
**INVESTIGATION PROCESS:**
**Step 1 - Architecture Research:**
- Window arch style researched
- Matched to 1920s Chicago construction
- Specific to certain neighborhoods
**Step 2 - Business Research:**
- Historical business directories
- Barbershops in identified n
