Types of aerial camera pdf

new camera system or to contract aerial image acquisition, it is important to recall some of the main camera parameters and to understand the differences between the old tradi-tional analogue cameras and the new state of the art digital cameras. The latter are di-vided into several categories: large format cameras (e.g. the Intergraph DMC), mediu Aerial Cameras •Aerial cameras must be (details in lectures): -Geometrically stable -Have fast and efficient shutters -Have high geometric and optical quality lenses • They can be classified according to type of frame: -Single lens Frame -Multiple frame -Strip Frame -Panoramic • They can also be either film or digital cameras

Aerial mapping cameras Every aerial mapping camera superimposes fiducial marks on. each photo. The fiducial marks. can be used to determine the. principal point (+) of the photo, as. well as to determine if the photo. is distorted (compare the measured. distances between the fiducial. marks to the known distances). Example aerial photo. Aerial Cameras Aerial photographs can be made with any type of camera (e.g. 35 . mmm m ssmall mall amateur or 70 mm or special cameras that are purpose70 mm or special cameras that are purpose built meant for mapping). Many successful applications have employed aerial photography . made from light aircraft with handheld 35 mm cameras quality photography. Aerial photographs taken with a frame camera are commonly classified as either vertical or oblique. Vertical photographs having a 9-inch by 9-inch format are the most common type taken for photogrammetric work. Basically, there are two types of aerial cameras presently used for photogrammetric mapping. They are: 1

Many factors determine the quality of aerial photography, such as • design and quality of lens system • manufacturing the camera • photographic material • development process • weather conditions and sun angle during photo flight In this chapter we describe the types of aerial photographs, their geometrical prop Overall accuracy is relative to camera quality and flying height. Elevations derived from photogrammetry are less accurate than ground surveys (when compared to conventional or GPS ground survey methods using appropriate elevation procedures). 3. Identification of planimetric features can be difficult or impossible (e.g. type of curb and gutter. GS400.02 Introduction to Photogrammetry T. Schenk schenk.2@osu.edu Autumn Quarter 2005 Department of Civil and Environmental Engineering and Geodetic Scienc There are three types of aerial images based on the orientation of the camera axis: Vertical photographs -the axis of the camera is in a vertical position. This results in little to no relief visible in the image and a smaller amount of area covered. Experts most often use vertical photographs like a map. Vertical aerial photographs have no.

Types of Aerial Photography and Its Applications

the aerial survey camera The analogue aerial survey camera has all the features of the conventional camera, however, it is much bigger, it is automatic and it has been adapted for its specific task. Because of the size of the camera and because of the fact that the orientation of the photos are important, the camera is mounted in the aircraft Aerial photography: It is the taking of photographs of the ground from an elevated/direct-down position. Usually the camera is not supported by a ground-based structure. Terrestrial photogrammetric: In this kind of photogrammetry, a camera is used in a stationary position. The camera is positioned on an elevated level. The tilt and othe The cameras are so fixed that the entire area from right horizon to the left horizon is photographed. 20. On the basis of the angles of coverage and focal length The lenses used in the camera, are of the following types according to the angles of coverage and the focal length : 1. Narrow Angle < 60 - More Focal Length 2. Normal Angle 60 - 75 3 A prototype of aerial radiation monitoring system using an unmanned helicopter mounting a GAGG scintillator Compton camera JianyongJiang a∗,KenjiShimazoe ,YasuakiNakamurab,HiroyukiTakahashia,b,YoshiakiShikazec, YukiyasuNishizawa c,MamiYoshida,YukihisaSanada c,TatsuoTorii,MasaoYoshinod,ShigekiItod compiling those maps. Aerial photographs are vital to any study of local environmental conditions and they are used in many different ways, depending on the type of photograph used, the angle the photographs are taken at, and the elevation of the vehicle used to take them. What Is Aerial Photography and How Does It Work

The type of battery varies for different camera types. Most cameras use Lightweight rechargeable Lithium polymer batteries. It will be a custom one, supplied along with the digital camera. Some point and shoot models use alkaline batteries. The battery compartment is usually at the bottom or side of the camera. 14. Tripod Mount. All Digital. 2004 UNMANNED AERIAL VEHICLES Since the development of digital cameras, low cost GPS/INS systems and other sensors have meant, the technology has now advanced toward the automation of the aerial unmanned vehicle operations and the acquisition of high resolution images using off-the-shelf cameras Falcon F8 Octocopte

The types of the aerial photographs based on the position of optical axis and the scale are given below : d. a. Types of Aerial Photographs Based on the Position of the Cameral Axis: On the basis of the position of the camera axis, aerial photographs are classified into the following types : (i) Vertical photographs (ii) Low oblique photograph Oblique aerial photograph is a view taken by a camera angled to the vertical. Types of Oblique Aerial Photographs Low Angle Oblique Aerial Photographs The photograph below is taken with camera angled at 30° to the vertical. Low angle aerial photographs are taken further away from the ground and cover a smalle metric cameras are only usable within a limited range of distances towards the object. The image coordinate system is defined by (mostly) four fiducial marks, which are mounted on the frame of the camera. Terrestrial cameras can be combined with tripods and theodolites. Aerial metric cameras are built into aeroplanes mostly looking straight. Types of Aerial Photos. There are several different types of aerial photographs. These include; 1. Oblique Aerial Photographs. This is undoubtedly the most commonly available type of aerial photo. The photographer takes the shot at an angle looking down to the ground below

Aerial Cameras - Chief Directorate: National Geo-spatial

  1. Aerial photography (or airborne imagery) is the taking of photographs from an aircraft or other flying object. Platforms for aerial photography include fixed-wing aircraft, helicopters, unmanned aerial vehicles (UAVs or drones), balloons, blimps and dirigibles, rockets, pigeons, kites, parachutes, stand-alone telescoping and vehicle-mounted poles.. Mounted cameras may be triggered remotely.
  2. of image quality expected in a small form factor aerial camera. For comparison, consumer cameras or cell phone cameras use very small sensors with tiny pixels and are based on CMOS technology which cannot approach the level of quality required for UAV applications. Camera Requirement
  3. There are three types of Aerial Camera : Super wide angle camera - f=100mm (used in flat areas like terai of nepal & in plain areas) Wide angle camera - f=150mm (Used in hilly areas) Narrow angle camera - f=300mm (Used in higher himalayas, sky scrappers & city like New york) Er.PrameshHada,Asst.Professor,necEr.PrameshHada,Asst.Professor,ne
  4. 2. AERIAL PHOTOGRAPHY 2-01 AIRCRAFT AND CREWS 2-1 2-02 AERIAL CAMERA 2-1 2-02.1 Minimum Standards 2-1 a. Radial Distortion 2-1 b. Resolving Power 2-1 c. Principal Point of Autocollimation 2-1 d. Filter Parallelism 2-1 e. Magazine Platen 2-1 f. Stereo Model Flatness 2-2 g. Calibrated Focal Length 2-2 h. Shutter Calibration 2-2 2-02.2.
  5. Drones can be classified on a different basis - say based on 'usage' like Drones for Photography, Drones for aerial Mapping, Drones for Surveillance etc. However, the best classification of 'Drones' can be made on the basis of aerial platforms. Based on the type of aerial platform used, there are 4 major types of drones
  6. Camera To Pdf free download - Magic Camera, PDF Download, Soda PDF, and many more program

Geometry and types of aerial photograph

  1. The quality of the aerial photographs is the main consideration in selecting techniques. 2. Parameters of aerial photography A flight planning consists of a flight (navigation) map which shows where the aerial photographs are to be taken and parameters (specifications) which outlines the specific requirements such as aerial camera and fil
  2. Aerial Camera Systems Basic Types of Aerial Cameras • Single lens frame camera (most common) • Multilens frame camera (specialized applications) • Strip camera (rarely used) • Panoramic camera (specialized applications) Film cameras • Digital camera (direct digital recording) • Video camera (analog or digital recording
  3. Tw o Lens Cone Types:Leica Geosystems offers customers the choice of two lens cones with different focal lengths, giving the opportunity to execute various types of survey flights efficiently. Configuration Alternatives: According to the type of survey flight, the appropriate aerial camera system can be easily configured
  4. 3.2 Aerial Photography. In texts on aerial photogrammetry or photo-interpretation, various types of aerial photographic cameras are discussed in detail (e.g. Lillesand and Kiefer, 1994; Paine, 1981).The implications of flight height, photographical orientation, and view angle on aerial photographic products are briefly discussed here
  5. separately purchase a gimbal and a camera. A popular combination is the H3-3D gimbal and the GoPro Hero line of cameras. Some Phantom users doing mapping projes prefer to use small, lightweight point-and-shoot cameras inead, which prevent the bothersome sh-eye ee of both DJI's Phantom Vision+ and Vision cameras and the GoPro line
  6. Aerial Photo Concept Digital Orthophotos are generated from the same type of Aerial photo as conventional hardcopy Orthophotography. The difference lies in the scanning of the airphoto, converting the photo to a digital image product that will be manipulated and processed with a computer. Cont

7.2 Types of Aerial Photos. Aerial photos can be distinguished depending on the position of camera axis with respect to the vertical and motion of the aircraft. Aerial photographs are divided into two major groups, vertical and oblique photos Cameras and their use for aerial photography are the simplest and oldest of sensors used for remote sensing of the Earth's surface. Cameras are framing systems which acquire a near-instantaneous snapshot of an area (A), of the surface.Camera systems are passive optical sensors that use a lens (B) (or system of lenses collectively referred to as the optics) to form an image at the focal plane. View p1.pdf from MATH 340 at University Teknology Mara Campus Arau, Perlis - Malaysia. Introduction To Aerial photos Types of Photographs Vertical. A vertical photograph is taken with the camera

A prototype of aerial radiation monitoring system using an

14 Basic Parts of a Camera Explained - PhotographyAxi

  1. Aerial Shot. Bird's-Eye View or Top Shot. Dutch Tilt or Dutch Angle Shot. Other Common Camera Shot Types. Cutaway (CA) Cut-in or Insert. Reaction Shot or Noddie. Master Shot (MS) We're going to look at each of these terms in more detail, below, but have arranged all of the basic camera shot and angle types into a Handy Guide to Basic Camera.
  2. There are many types supporting different uses, but they are also subject to different regulations, depending systems to keep them flying and can carry sensors to perform dedicated functions. One of the most common devices is a camera mounted on gimbals to obtain high-quality video and still photography. Aerial monitorin
  3. It should be noted, however, that this type of camera is feeling pressure from the cellphones, so there are now a number of point and shoot cameras with advanced features and larger sensors, with which it's possible to get great results. 2014 examples include the Canon G16 and Sony RX100 III
  4. aerial systems. This technology began taking small leaps in the years following the American Civil War - the first military aerial reconnaissance photos were taken in 1898 during the Spanish-American War via a camera attached to a kite [2]. As the trend shows, many of the advancements i
  5. Aerial photography is - as it sounds - the process of taking photographs from the air, but there is more to it than simply using a light aircraft or helicopter and flying up to take photographs. There are many elements to an aerial survey that must be considered to ensure that the data is useful enough to extrapolate whatever is being investigated
  6. several types of aircraft, including manned helicopters and fixed-wing aircraft, and Unmanned Aircraft Systems (UAS) for border surveillance and law enforcement purposes. These aircraft are equipped with video, radar, and/or other sensor technologies to assist CBP in patrolling th
  7. Skycam is a computer-controlled, stabilized, cable-suspended camera system.The system is maneuvered through three dimensions in the open space over a playing area of a stadium or arena by computer-controlled cable-drive system. It is responsible for bringing video game-like camera angles to television sports coverage. The camera package weighs less than 14 kilograms (31 lb) and can travel at.

The DMC main camera has 8 individual cameras that are autonomous, 4 panchromatic, and 4 multispectral (red, green, blue, and near infrared). These cameras are able to produce images in black and white, colored, or colored near infrared with a 12 bit resolution Integration of Drones into Domestic Airspace: Selected Legal Issues Congressional Research Service 2 possesses all the space above the land extending upwards into the heavens.7 This maxim was adopted into English common law and eventually made its way into American common law.8 At the advent of commercial aviation, Congress enacted the Air Commerce Act of 19269 and late Unmanned Aerial Systems: A Historical Perspective continues this long tradition in providing insight to a vital asset on the modern battle-field and assists commanders and staffs in its employment. Nothing is more important than protecting the lives of those who willingly risk them

TYPES OF SHOTS By Shot Size Medium Shot (MS) Let's move onto camera shots that reveal your subject in more detail. The medium shot is one of the most common camera shots. It's similar to the cowboy shot above, but frames from roughly the waist up and through the torso. So it emphasizes more of your subject while keeping their surroundings visible GoPro camera lenses are not great for creating aerial maps. To get some sort of decent results, you would have to be flying higher than 400 feet (approx 120 meters). Also, the integrated cameras on the DJI drones such as the Phantom 3, Phantom 4 and Inspire 1 will allow you to capture photogrammetry images

Acces PDF Leica Rc30 Aerial Film Camera a Leica RC-30 aerial camera. The Leica RC-30 is one of the finest aerial film cameras equipped with forward motion compensation (FMC) to reduce blurring and produce the highest quality photographs. M.A.N. Mapping | Services Figure 2.07 shows a Leica RC-30 aerial film camera The internal geometry of design of a spaceborne multispectral sensor is quite different from an aerial camera. The figure below (from Jensen, 2007, Remote Sensing of the Environment) shows six types of remote sensing systems, comparing and contrasting those using scanning mirrors, linear pushbroom arrays, linear whiskbroom areas, and frame area. Soldiers stand behind of a camera by Unmanned Aerial System 'Shadow' during an official presentation by the German and U.S. Unmanned Aerial Systems (UAS) at the U.S. military base in Vilseck. An aerial photograph taken of an image such as a building A in the below sketch is displaced to position 'A' due to a combination of the height of the building above the datum and radial distortion from the centrally projected camera/projector lens A Drone Pilot Holds the Elios 2 Drone Prior to an Inspection in a Mine. In this comprehensive guide to drone inspections we're going to walk through the requirements of a typical inspection, how drones fit into the process, the benefits of using drones for inspections, and then take a look at all the different industries currently using drones for their inspection-related needs

06: Introduction To Aerial Photographs / Practical Work in

  1. The DJI Mavic Pro has a 4K camera, ultra-precise 3-axis gimbal, and a max transmission range of 4.1 mi (7 km). Learn more about the Mavic Pro with specs, tutorial guides, and user manuals. Download the DJI GO app to capture and share beautiful content
  2. Photographic surveying also called photograph icing is a method of surveying in which plans or maps are prepared from photographic taken at suitable camera stations or photographic is the science of making measurement from photographs. Types of Photographic Survey: Photogrametry may be divided into two classes. Terrestrial or ground.
  3. Two general types of photogrammetry exist: aerial (with the camera in the air) and terrestrial (with the camera handheld or on a tripod). Terrestrial photogrammetry dealing with object distances up to ca. 200 m is also termed close-range photogrammetry. Small-format aerial photogrammetry in a way takes place between these two types, combining.
  4. This paper represents the result of the IAEG C35 Commission Monitoring methods and approaches in engineering geology applications workgroup aimed to describe a general overview of unmanned aerial vehicles (UAVs) and their potentiality in several engineering geology applications. The use of UAV has progressively increased in the last decade and nowadays started to be considered a standard.
  5. View Test Prep - Final Camera ready.pdf from CS CEN-222 at Bahria University, Islamabad. Assessing Performance of Convolutional Features for Terrain Classification Using Remote Sensing Data Jawa
  6. In digital cameras, we use the Ground Sampling Distance (GSD) to describe the resolution quality of the image while in film-based cameras we use the film scale. Scale from Film Camera. Aerial photographs were acquired from an altitude of 6,000 ft AMT (Above Mean Terrain) with a film-based aerial camera with lens focal length of 6 inches

Aerial Photographs: Types Of Photos, Environmental Uses

FIGURE 47 UAV CAMERA PAYLOAD MARKET, BY CAMERA TYPE, 2021-2026 (USD MILLION) High-resolution cameras Multispectral cameras Hyperspectral cameras Thermal cameras Electro optical (EO)/infrared (IR) cameras TABLE 44 UAV CAMERA PAYLOAD MARKET, BY CAMERA TYPE, 2017-2020 (USD MILLION Cameras, too, have come a long way; they are smaller, lighter, shoot in much higher resolutions and have better lenses. It was only a matter of time before the two would be paired using relatively sophisticated, but also inexpensive, electronic image stabilizing gimbals making video and photographic aerial imagery easy, affordable and fun Most drone cameras support 3-step bracketing. This is a great feature that you can use to get three options for every shot you take (an underexposed and overexposed variation along with the standard image). You can choose the best image later and can also blend exposures using post-processing software. Use filters

Unmanned Aerial Vehicles (UAV) use GPS sensors to determine the specific router without the presence of pilot. It can also return back to its original position with the use of GPS sensor. Distance Sensor: These type of sensors are used to sense the obstacles. The distance sensors are based on ultrasonic, laser based or LIDAR based The unmanned aerial vehicles (UAVs) represent one of the most important innovation technologies of the last years; the progress made in the field of sensors has allowed to equip the UAVs with various devices: high resolution digital cameras

Aerial photography - Wikipedi

The USGS has also established minimum standards for camera parameters and performance.5 These standards have identified sub-standard cameras and helped the U.S. aerial remote sensing industry maintain a high overall quality level of the cameras in use today / GIS.VeCAD allows import / export file type DXF, HPGL, CNC and supports direct insertion Bitmap.Program options include good tools snap, control over the created layers, line types, colors, thicknesses, view-ports and types of text. The camera is an optical device which can be obtained using real images of objects and wa Camera timing meant by the shutter timing and camera inclination. V. IMAGE PROCESSING Image processing for 3d images have upto now only been used in addition to taken images from the ground. The marked land surface is fully image processed by the fabricated UAV. In this the aerial image is the input and it process along with the parameters In aerial photography, this is most easily accomplished with a combination of proper aircraft positioning, framing and use of the zoom Most camera manufacturers provide software that helps transfer photos from a tethered camera to the The best choice is a USB 2.0 card reader that accepts multiple types of cards. Some computers (laptops.

Photogrammetry- Surveying - SlideShar

Two broad types of airborne cameras are used: film-based and digital cameras . The most common type of camera used in aerial photography is film-based, single-lens frame cameras, with lenses of high geometric quality to minimize distortion (Wolf and Dewitt 2000) This image is a vertical aerial photograph of the River Forth at Throsk, Stirlingshire, in 1988. Vertical photographs are the most common type of aerial photograph for remote sensing and aerial survey purposes. They can be scaled, allowing objects and distances to be measured, aiding in their identification

1PC Mini Folding Drone High-definition Aerial Photo Drone

Types of Drones - Explore the Different Types of UAV'

Equipped with a 1-inch 20MP camera, the Phantom 4 Pro is capable of shooting 4K 60fps video and 14fps Burst Mode stills. It has a max flight time of 30 minutes, and a max transmission range of 4.1 mi (7 km). Learn more about the Phantom 4 Pro with specs, tutorial guides, and user manuals. Download the DJI GO app to capture and share beautiful content The last type of motion that we'll look at is 360-degree motion, in which the camera moves entirely around the subject of the shot. These shots can be challenging to do on large film sets, because they require hiding the crew and equipment from view, but they're more common in the days of Steadicams and CGI

Principle of aerial photography and types

Camera To Pdf - CNET Downloa

A new aerial platform has risen recently for image acquisition, the Unmanned Aerial Vehicle (UAV). This article describes the technical specifications and configuration of a UAV used to capture remote images for early season site- specific weed management (ESSWM). Image spatial and spectral properties required for weed seedling discrimination were also evaluated Classifying Aerial Photograph . Different kinds of aerial photographs are available depending on · Film emulsion: black-and-white, true-color, and color-infrared films · Camera's height: low, medium, and high altitude photography · Camera's vantage point: vertical and oblique photography Color-infrared aerial photo was used in WWII for detecting camouflag aerial vehicles—drones—are used for a wide variety of purposes, including scientific endeavors, • iPod nano or similar tiny camera • Lightweight strap, string, or trustworthy adhesive Discuss different types of biplanes and the history of aviation. Note that the biplane was th The Fairchild Aerial Camera Corporation, founded in 1920 by the inventor and entrepreneur Sherman Mills Fairchild (April 7, 1896 - March 28, 1971)[1] was the manufacturer of a range of aerial cameras. 1 Background 2 Cameras produced by Fairchild 2.1 F-1 2.2 F-8 2.3 F-14 2.4 F-17 2.5 F-56 2.6..

ISSN 1392 1541 Geodezija ir kartografija, 2004, XXX t

An aerial photograph, in broad terms, is any photograph taken from the air. Normally, air photos are taken vertically from an aircraft using a highly-accurate camera. There are several things you can look for to determine what makes one photograph different from another of the same area including type of film, scale, and overlap This training circular is the Aircrew Training Manual (ATM) for Unmanned Aerial Vehicles (UAVs). Battle-Focused Training principles outlined in FM 25-101, will help commanders at all levels develop, implement, and administer a comprehensive aircrew training program This 60 types might be a lot to take in. We suggest you come back to this article as it collects the main genres of photography. If you are a beginner, you are going to find loads of new ideas among these. Getting to know these types of photography is a nice start of this beautiful hobby Download Free PDF Point Cloud Generation from Aerial Image Data Acquired by a Quadrocopter Type Micro Unmanned Aerial Vehicle and a Digital Still Camera Sensors, 201

A drone survey refers to the use of a drone, or unmanned aerial vehicle (UAV), to capture aerial data with downward-facing sensors, such as RGB or multispectral cameras, and LIDAR payloads. During a drone survey with an RGB camera, the ground is photographed several times from different angles, and each image is tagged with coordinates WingtraOne integrates high-end compact cameras from Sony. They allow you to capture the sharp images and fine details that are required for the most demanding aerial mapping applications. metric. imperial. Sony RX1R II. Highest precision and most popular. Sony QX1

Video: 3.2 Aerial Photography - nature.berkeley.ed

aerial photograph of sanfrancisco Most of us are very much aware about the photographs. As we know there are many tools for capturing these photographs. These tools essentially include various types of cameras which include film based cameras and.. The Imperx AVI Aviation HD-SDI cameras can be manufactured in a housing for airborne/aviation applications. In the available IP 69 housing, the cameras will operate in wet conditions and distances up to 60,000 ft. altitude. These cameras are perfect for use in aviation, aerial imaging and or in areas where temperature and weather is constantly. Drone aerial photography is indeed among the primary usage of drones. Because of improved technology, a lot more quadcopters are now well-equipped to hold heavy camera equipment. The drones, nowadays, are steady and can take clear and crisp pictures 1 Hereafter the terms photographs and digital photographic records will be used to describe digital camera files and scans of photographic prints, slides, and negatives.. 2 Megapixel is millions of pixels, which is a measurement calculated by multiplying the pixel array values for image width (in pixels) by image height (in pixels).. 3 In the 'II' format (i.e., little-endian), byte order. Facility Specific Camera/Cell Phone Photos: Facilities are encouraged to include their own photos of their chemical storage locations. Jpg or pdf format is preferred. Photos of storage inside buildings, and close-up photos of tank valves can be particularly useful for emergency planners and responders. As with the aerial photo examples, th

RS&GA: Lesson 7 Basic Principles of Photogrammetr

1. Single Rotor Drone: The most common construction in rotory type drone use to be multi rotor type designs that have many rotors for holding its position but in case if single rotor model you will find just a single rotor inside. Another one will be a tail rotor that simply assists to provide control to the heading Coverage path planning consists of finding the route which covers every point of a certain area of interest. In recent times, Unmanned Aerial Vehicles (UAVs) have been employed in several application domains involving terrain coverage, such as surveillance, smart farming, photogrammetry, disaster management, civil security, and wildfire tracking, among others Pix4Dcapture offers the possibility to fly four different kind of autopilot missions and one manual but semi-automatic mission. To get the best results out of the image acquisition plan, the type of mission and the drone have to be chosen depending on the terrain/objects that need to be reconstructed. For more information: - Step 1 1968 GS-VCAT Project Aerial Index, Sheet Poison Spring . Resource Tools. Original PDF File: 0 B: Downloa Global Digital Aerial Cameras Market research report provides the historical, current and future situation of the industry. The report imparts insights into the size and share, revenue, and demand-supply scenario. In addition, the report includes an enterprise overview, recent developments covering market key strategies adopted by leading players

Remote control drone with camera iphone kikAL340 Portable Tripod Lattice Tower - 14 MetreWater | Free Full-Text | Identification of Water Body

Cameras and Aerial Photography - NRCa

Industry Research Biz forecasts the latest report on Military Unmanned Aerial Vehicle Market (Covid-19) Impact and Analysis by 2027. The research report includes Future Growth Prospect, Technological Innovation, Business Opportunities, Industry Development, Competitive Analysis, and Regional Overview of the market

C-mount and M12 lens adapter for Raspberry Pi camera