100 micron Zoom in on a region of the image with the "Magnifying glass" tool found in the toolbar until you can see individual pixels. Then zoom out again to see the whole image. Question 1: What are the dimensions of this image in pixels (i.e. the total width and total height of the image in pixels), and how many pixels are there in total in the image? Digital images are usually captured using a digital camera, whose image sensor is a rectangular array of square sensing elements (which, like the elements of the digital image, are also called pixels). Each pixel in the camera is an independent sensor capable of recording light intensity at this position (for three different wavelengths in the case of colour cameras). Question 2: Consider a camera whose image sensor has a width of 4.10 ±0.01 mm and a height of 3.28 ± 0.01 mm, and contains 640 rows and 512 lines of pixels. What is the size (width and height) of a single pixel on the camera sensor (including error)? Question 3: The camera described in the previous question is used to capture the image of a sample formed by a microscope with a 10 x objective. What is then the size of a single pixel in the image, i.e. what distance in the object (sample) plane does the width of a single pixel correspond to (give your answer in micron/pixel, including error)? Question 4: The scale of a digital image is defined as the pixel density (in pixel/micron), that is the number of pixels in the image found over a distance corresponding to 1 um in the sample. What is the scale of the image discussed in the previous question?
100 micron Zoom in on a region of the image with the "Magnifying glass" tool found in the toolbar until you can see individual pixels. Then zoom out again to see the whole image. Question 1: What are the dimensions of this image in pixels (i.e. the total width and total height of the image in pixels), and how many pixels are there in total in the image? Digital images are usually captured using a digital camera, whose image sensor is a rectangular array of square sensing elements (which, like the elements of the digital image, are also called pixels). Each pixel in the camera is an independent sensor capable of recording light intensity at this position (for three different wavelengths in the case of colour cameras). Question 2: Consider a camera whose image sensor has a width of 4.10 ±0.01 mm and a height of 3.28 ± 0.01 mm, and contains 640 rows and 512 lines of pixels. What is the size (width and height) of a single pixel on the camera sensor (including error)? Question 3: The camera described in the previous question is used to capture the image of a sample formed by a microscope with a 10 x objective. What is then the size of a single pixel in the image, i.e. what distance in the object (sample) plane does the width of a single pixel correspond to (give your answer in micron/pixel, including error)? Question 4: The scale of a digital image is defined as the pixel density (in pixel/micron), that is the number of pixels in the image found over a distance corresponding to 1 um in the sample. What is the scale of the image discussed in the previous question?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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please only solve question 3, thanks
Transcribed Image Text:100 micron
o Zoom in on a region of the image with the "Magnifying glass" tool found in the toolbar
until you can see individual pixels. Then zoom out again to see the whole image.
Question 1: What are the dimensions of this image in pixels (i.e. the total width and
total height of the image in pixels), and how many pixels are there in total in the image?
Digital images are usually captured using a digital camera, whose image sensor is a
rectangular array of square sensing elements (which, like the elements of the digital
image, are also called pixels). Each pixel in the camera is an independent sensor
capable of recording light intensity at this position (for three different wavelengths in the
case of colour cameras).
Question 2: Consider a camera whose image sensor has a width of 4.10 + 0.01 mm
and a height of 3.28 ± 0.01 mm, and contains 640 rows and 512 lines of pixels. What is
the size (width and height) of a single pixel on the camera sensor (including error)?
Question 3: The camera described in the previous question is used to capture the
image of a sample formed by a microscope with a 10 x objective. What is then the size
of a single pixel in the image, i.e. what distance in the object (sample) plane does the
width of a single pixel correspond to (give your answer in micron/pixel, including error)?
Question 4: The scale of a digital image is defined as the pixel density (in pixel/micron),
that is the number of pixels in the image found over a distance corresponding to 1 um in
the sample. What is the scale of the image discussed in the previous question?
Question 5: If you want to make a very high quality print (at 600 dpi, meaning 600 dots/
pixels per inch) of a 640 x 512 pixel image, what will be the dimensions of this print?
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