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A convenience store needs a camera to cover the entrance. Identification is needed at 80 pixels per face. Given that the scene is 2 m (6 ft 7 in) wide, which of these resolutions is the minimum one needed?
Suggested Answer: C
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To achieve identification at 80 pixels per face for a scene that is 2 meters (6 feet 7 inches) wide, a minimum resolution of 1280 x 720 is needed. This calculation ensures that each face captured in the frame meets the pixel density requirement for clear identification purposes.
27 comments · newest first
JO
Jolanda
10 months ago
Definitely need at least 1920x1080 for good detail!
JA
Jacob
10 months ago
Wait, are we really sure 80 pixels is enough?
FA
Farrah
10 months ago
640x480 is way too low for face ID.
DO
Dorinda
10 months ago
800x600 might work, but not sure about clarity.
RE
Ressie
10 months ago
I think 1280x720 should be enough!
AS
Asha
11 months ago
I think I read that higher resolutions help with clarity, especially in crowded areas. Maybe 1920x1080 is overkill, but I wouldn't want to miss any details.
FE
Felice
11 months ago
I practiced a similar question where we had to determine resolution based on distance and face size. I feel like 1280x720 might be the right choice here, but I’m not completely confident.
CA
Carole
11 months ago
I’m not entirely sure, but I think 80 pixels per face means we need to consider how many faces we might see at once. Could it be that 640x480 isn't enough?
CR
Cristal
11 months ago
I remember something about pixel density and how it relates to the size of the scene. I think we need to calculate how many pixels we need across the width.
NA
Narcisa
11 months ago
This question is making me a bit nervous, but I'll give it my best shot. I just need to remember the formula for calculating the required resolution.
WE
Weldon
12 months ago
I'm pretty confident I can solve this. I just need to do some quick math to figure out the minimum resolution.
CL
Clement
12 months ago
Okay, I think I got this. I need to find the number of faces that can fit in the 2m width, then calculate the minimum resolution needed to get 80 pixels per face.
LO
Loreta
12 months ago
Hmm, I'm a bit confused on how to approach this. Do I need to calculate the number of faces that would fit in the 2m width and then determine the resolution?
GL
Glory
1 year ago
This seems straightforward, I just need to figure out the minimum resolution needed to get 80 pixels per face given the scene width.
WI
William
1 year ago
Ah, the old camera resolution conundrum. I'm going with B) 800 x 600 – it's a classic and should do the trick. Plus, it leaves room in the budget for some snacks, am I right, folks?
LE
Leatha
1 year ago
User 2: Agreed, it's a classic choice and should work well for the entrance.
AL
Alline
1 year ago
User 1: I think B) 800 x 600 is the way to go.
EM
Emile
1 year ago
I'm not sure, but I think C) 1280 X 720 could also work.
LA
Laquita
1 year ago
I agree with Brett, D) 1920 X 1080 makes sense for clear identification.
GL
Glenn
1 year ago
Oof, this one's a toughie. But if I'm doing the math right, I think D) 1920 x 1080 is the safest bet. Can't be too careful with those convenience store shenanigans, ya know?
MO
Moon
1 year ago
Yeah, I think so too. Better to be safe than sorry when it comes to security.
HA
Haley
1 year ago
I agree, D) 1920 x 1080 seems like the best option for clear identification.
RE
Reiko
1 year ago
Hmm, let's see. With a scene width of 2 meters and a required resolution of 80 pixels per face, I'd say C) 1280 x 720 is the way to go. Gotta make sure we can identify those shoplifters, am I right?
KI
Kiley
1 year ago
Agreed, we need to make sure we can catch any suspicious activity at the entrance.
AL
Albert
1 year ago
Yeah, that resolution should definitely give us the detail we need.
DA
Darrel
1 year ago
I think C) 1280 X 720 is the best choice for clear identification.
BR
Brett
1 year ago
I think the answer is D) 1920 X 1080.