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Mac just seems to me like the abandoned stepchild of the PC world that, after being dead for several years, tried butting its way back into the PC world while everyone was perfectly content with windows and the direction windows was going in, using clever advertising campaigns that appealed to the consumer population's retardedness and desire to feel special and loved
nope, it's a solid platform with that incorporates many of the advantages of both open source and proprietary into one system that unfortunately has an undeserved stigma attached to it because of the way it is marketed.
well, my computer substitutes any need for entertainment for me. I don't need to go to the movies or rent them; I don't need to buy CDs.Quote:
Originally Posted by maks
My computer has brought me so much more than any single <$1000 device could have brought me. I practically learned everything I know about drugs, pharmacology, and synthesis over the internet. If it weren't for dumb wikipedia articles, I would have never gotten into philosophy or psychology.
As far as minimalism goes, I imagine my life without a computer and I see me spending thousands of dollars a year on worthless shit to feel satasfied - the same type of useless shit that my computer brought me all on its own.
I'm really disappointed about PS Vita SDK
http://gyazo.com/313967ff8007b3897bfa7cd5bdc98292.png
one of these days a swarm of roaches or a nest of squirrels is going to make its way through the giant rip in my window screen, and i'm going to have the battle of my life, thrashing around breaking shit, trying to get rid of them
Lol... erm? Get back on topic you retards.
input M0ndeFailQuote:
Originally Posted by elezzzark
i kind of remember the movie it was really slow and boring
who is hiroshima
you must not be that important if you dont know who i am
im kind of a big deal heh
right
if i remember correctly he was one of the mods on the price is lol
lnopia has bad memory
so its a steve yelle alt?Quote:
Originally Posted by lnopia the great
yeah im steve yelle
welcome back
im barry
also elz doesnt really know how to code he just pretends
hiroshima is a faggot whoever he is, don't encourage him
i vaguely remember seeing his name like a few years ago, must not have been that important
i think youre right
ive prob been around longer than u queers
:projecting:Quote:
Originally Posted by hiroshima
can macs get haunted by ghosts that make fun of Heroes for you?
nope? looks like alienware wins again
alienwares have high specs but their hardware is low quality crap that's why you can spend $8000 and end up with a machine that bluescreens all the time
Basic Principles of Photogrammetry
What is photogrammetry?
The science and technology of obtaining spatial measurements and other geometrically reliable derived products from photographs
Measurements include distances, areas, elevations to generate digital elevation models (DEM’s), orthophotos, thematic GIS data, ect.
Digital and softcopy refer to any photogrammetric operation involving the use of digital raster photographic image data.
Historic use of photogrammetry has been the production of topographic maps
Basic Geometric Characteristics of Aerial Photographs
Considered either vertical or oblique
-Vertical photographs are made with the camera axis directed as vertically as possible (perpendicular) to the ground
-True vertical rare to obtain due to angular rotations, or tilts, caused by the angular attitude of the aircraft at time of exposure
-Vertical aerial photographs have been between 1 and 3 degrees of tilt.
-Oblique area photographs are taken with intentional tilt
-High oblique aerial photographs contain the horizon
-Low oblique aerial photographs do not.
Taking Vertical Aerial Photographs
-The photographs are usually taken along a series of parallel passes called flight strips or flights lines
-The line traced on the ground beneath the aircraft is called the nadir line
-Connects the image centers of the vertical photographs
-This lapping along the flight line is called end lap
-The area of coverage common to an adjacent pair of photographs in a flight line is called the stereoscopic overlap area.
-The pair of photos is called a stereopair
-The amount of end lap is normally between 55 and 65 %
-Need at least 50% endlap for stereoscoptic coverage
Figure 3.1
-The ground distance between photo centers at the time of exposure is called the air base
-Vertical exaggeration is the ratio of air base to flying height
-The larger the base-height (BH) ratio, the greater the vertical exaggeration.
-Adjacent flights lines are photographed so that there is also a lateral overlapping of adjacent strips called side lap
-Normally held at approximately 30%
-The photographs of two or more sidelapping strips used to cover an area is referred to as a block of photos
-A block of photos can be “cut and passed” together to create a photo mosaic over the project area.
Figure 3.3.4
Geometric Elements of a Vertical Photograph
Photocoordinate measurement can be made from a variety of devices
Can use:
-An engineers scale for low orders of measurements accuracy
-Coordinate digitizer table
-A comparator
Photocoordinates can be in “page units” or “image units”
Errors in photocoordinate measurements include:
-Failure of fiducial axes to intersect at the principal point
-Shrinkage or expansion of photographic materials
-Lens distortions
-Atmospheric refraction distortions
-Earth curvature distortions
SCALES
Photographic scale is like map scale
-The scale of a photograph is the ratio of a distance on the photo to that same distance on the ground.
-On a map, scale is uniform everywhere because a map is an orthographic projection.
-An aerial photograph, on the other hand, is a perspective projection and, as will be demonstrated herein, its scale varies with variations in terrain elevation.
Scales may be expressed as:
-Unit equivalent
-Representative fractions, or
-As a ratio
For example, 1 cm on a map or photo represents 100 m (10 000cm) on the ground, the scale expressed in the aforementioned three ways is:
-Unit equivalent 1 cm = 100m
-Representative fractions, or 1 / 10,000
-As a ratio 1:10,000
Large scale vs. small scale
-1:10,000 vs. 1:50,000 which is larger?
-1: 10,000 is larger.
Scale over flat terrain
-Can calculate scale by measuring the corresponding photo and ground distances between two points
-Points must be identifiable on both the photo and ground, thus:
Scale = Photo distance (d) or (ab)/ground distance (D) or (AB)
Scale is also a function of focal length (f) of the camera used to acquire the image and the flying height above ground, (H’)
-Scale=camera focal length (f)/flying height above terrain (H’)
OR
-Scale=camera focal length (f)/flying height at datum (H) –elevation above datum (h)
Example 3.1
-Assume that two road intersections shown on a photograph can be located on a 1:25,000 scale topographical map. The measured distance between the intersections is 47.2 mm on the map and 94.3 mm on the photograph. What is the scale of the photograph? At that scale what is the length of the fence line that measure 42.9 mm on the photograph?
find ground distance
1 mm on the map= 25,000 mm on the ground
1mm on the map= 25 m on the ground (times each side by 47.2)
Ground Distance = 1,180 m
Scale=Photo distance (d) or (ab)/ground distance (D) or (AB)
= 94.3(0,0943)/1,180
Ans:12,500
Example 3.2
-A camera equipped with a 152 mm focal length lens is used to take a vertical photograph from a flying height of 2780m above mean sea level. If the terrain is flat and located at an elevation of 500m, what is the ground scale of the photograph?
Ans: 15,000
Example 3.3
-Assume that a vertical photograph was taken at a flying height of 5,000m above sea level using a camera with a 152 mm focal lens. Determine the photo scale at points A and B,which lie at elevations of 1200 and 1960 m. What ground distance corresponds to a 20.1 mm photo distance measured at each of these elevations?
Ans (1200): 25,000
Ans (1960): 20,000
-For the 20.1 multiply each answer by 0.201 and you’ll get your ground distance.
The average scale for an entire photograph is based on the average terrain elevation for the area imaged.
-Savg=f/H-havg
-The result of the photo scale variation is geometric distortion
-All points on a map are depicted at their true relative horizontal (planimetric) positions
-Photo locations taken over varying terrain are displaced from their true map positions
-The difference in position of geometric distortion results from a map being scaled in an orthographic projection whereas a vertical aerial photograph yields a perspective projection
i dont want to hear it
my pass is whatdidyousay, try it out