vlogging lens

; key frame extraction is a subsequent feature extraction. The premise of index establishment, the merits and demerits of the algorithm will directly affect the accuracy and performance of the whole video analysis.Key frame Extraction MethodsKey frame extraction methods are mainly divided into two categories: The method based on the whole image sequence and the method based on compressed video;At present, most of the key frame extraction research is based on the full image video analysis. The di

1. The magnification of the dual telecentric lens is independent of the position of the analyte and the position of the image plane. In the object side telecentric lens, the magnification is a constant, corresponding to a fixed image plane. 2. Aberration of the lens: spherical aberration (symmetry): Aspheric lens inste

1. Use the manual mode (we recommend the video "Wu Shitong photography basics 07-exposure compensation and manual mode")Before you start shooting, make sure that the settings of the fuselage are correct. Let's start with the shooting mode. No matter which shooting mode you usually use, in the field of low light motion photography, you need to use a shooting mode that gives you more room for adjustment. Manual mode (M files) gives you more control over the body, so using this mode f

Article Introduction: The transform in CCS3 is a great tool for setting interface styles and animations. 3D transformations are also supported in Chrome and FF. IE9 not supported, IE10 support. What is the difference between the following two lines of statement? Css 1 2 "animateTest" style="-webkit-transform: perspective(400px) rotateY(40deg);"> Css 1 2 "animateTest" style="-webkit-transform: rotateY(40deg) perspective(400px);"

the time of the disk becomes longer Optical drive failed to read disk hardware fault is mainly concentrated in the laser head components, and can be divided into two kinds of situations: one is used too long to cause the laser tube aging; the other is the photoelectric tube surface too dirty or laser tube lens too dirty and displacement deformation. So when the power of the laser tube is adjusted, the optical tube and the laser tube

, irregular.Medium long Stroke (Medium strokes): Horizontal lines change in length.Long strokes: The horizontal lines change a little longer.(6) Mosaic (mosaic)The filter can break down the image into a number of rules arranged by the small squares, to achieve the image of the grid, the pixels in each grid using the average color fill in the grid, resulting in a mosaic effect.Cell Size:Square (sqrare); Use the mouse to drag the stroke to change the size of the cell.(7) Pointillize (point shape)T

"Algorithmic" greedy + high precision"Solving the puzzle" learn from: http://blog.csdn.net/greatwjj/article/details/12129439The order of the two neighbors has no effect on the money of the person in front and the person behind.Make two people respectively I and i+1, left hand number is a[i],a[i+1], right hand number is b[i],b[i+1], money is w[i],w[i+1].Sum[i] is the total product of the left hand number of 1...N.W[i]=sum[i-1]/b[i]W[I+1]=SUM[I]/B[I+1]Because Sum[i]=sum[i-1]*a[i]So w[i+1]=sum[i-1]

; - } - intMain () - { - intt,times=1; inscanf"%d",t); - while(t--){ tomemset (s),0,sizeof(s)); +scanf"%s", s); -stackChar>p; the intLen=strlen (s), lens=0, tmp=0, now=0; * for(intI=0; i){ $ if(s[i]=='('|| s[i]=='{'|| s[i]=='[')Panax Notoginseng P.push (S[i]); - Else{ the if(!Q.empty ()) { + Chartop=p.top (); A if(Match (Top,s[i])) { the P.pop ();

as: The use of light field lighting, the defective part of the reflected light is no longer falling into the lens range, forming a low gray value area, contrast with the background; Dark field illumination in contrast, the reflected light in the defective part enters the lens, producing a high gray value area. LightThere are many types of light sources that can be illuminated, but in m

"";}; } FunctionKencode (unzipstr, iscusencode ){ If(Iscusencode ){ VaRZiparray =NewArray (); VaRZipstr =""; VaRLens =NewArray (); For(VaRI = 0; I VaRAC = unzipstr. charcodeat (I ); Zipstr + = ac; Lens = Lens. Concat (AC. tostring ()

I would like to give you a detailed analysis of the techniques and experiences of shooting portraits with a Canon 50D camera.Sharing experiences:Camera: EOS 50DLens: EF 50mm f/1.2L USMAutomatic aperture first exposure (F1.6, 1/320 seconds)White balance: AutomaticISO 200Photo Style: StandardStep 1: place the camera on a tripod to better use bright lensesWhen shooting portraits by the window, it is suitable for the use of the maximum aperture Bright Fixed focal

To the photographic enthusiasts for detailed analysis to share the performance of Canon IXUS155 camera. Analytical sharing: Canon IXUS155 the front and the traditional Ixus machine as very concise, which is the position of the lens, the center of the design can make the fuselage look more symmetrical, Canon IXUS155 adopted a telescopic lens design, the shutdown state can be completely cl

Many street photographers say the ideal lens focal length is 35mm, because this wide-angle focus on the crowded street to the photographer enough space for the composition, covers a wide range, can be the characters and most of the surrounding environment, also some people say 50mm ideal, like Bresson, almost all works are used 50mm shooting, Because he thinks 50mm is the focal length of the human eye, WYSIWYG, this is the word that the programmer com

What is the difference between the following two lines of statement? Css 1 2 "animateTest"style="-webkit-transform: perspective(400px) rotateY(40deg);"> Css 1 2 "animateTest"style="-webkit-transform: rotateY(40deg) perspective(400px);"> If you are not clear, please listen to me. The transform in CCS3 is a great tool for setting interface styles and animations. 3D transformations are also supported in Chrome and FF. IE9 not suppo

Article Introduction: the Perspective property of the CSS3 transform. What is the difference between the following two lines of statement? Css Css If you are not clear, please listen to me. The transform in CCS3 is a great tool for setting interface styles and animations. 3D transformations are also supported in Chrome and FF. IE9 not supported, IE10 support. As long as the 3D scene will be involved in perspective and pers

is too large problem, the following parameters can be adjusted in the night environment, the lens to achieve optimal noise and exposure; isp_ae_attr_ex_s Aeattrex; Aeattrex.enaemode = ae_mode_low_noise; Noise reduction mode, reduced frame rate to ensure image quality when light is low Aeattrex.u8expcompensation = 64;//AE Adjusts the amount of exposure compensation, because the machine uses a white LED light, so this side needs to be set to 64 if set

optical drive, the fault can be eliminated. Common Failure VI: optical drive when reading data, sometimes can not read, and read the disk time to become longer Optical drive Read disk hardware failure is mainly concentrated on the laser head assembly, and can be divided into two cases: one is the use of too long to cause the aging of the laser tube, the other is that the surface of the photoelectric tube is too dirty or the laser tube lens is too d

Give the photographers a detailed analysis to share the Canon 5DMarkII camera photo of the whole body Street portrait of the tutorial. Tutorial Sharing: Shooting data: EOS 5D Markⅱ EF 400mm f/2.8l is USM Aperture priority automatic exposure (f4,1/1250 seconds) Exposure Compensation: -1ev ISO 100 White balance: Automatic When photographing a body portrait, the focal length of the lens is important for the virtual background. This is because the longer

the focus length of the lens in the filter, through which we can control the position of the lens focus in order to control the distortion of the scene. Notice that at some point, because the lens focus may cause the image to not be displayed, you can simply turn the focal length parameter to a lower value. We can see that when the parameter is 5, when the

Long time no Knock blog, thank you for your message, attention, private messages and other support, but I seem to have no way to continue to write the previous blog series, because I found online about unity3d content too little, so I can not extricate themselves to write u3d related articles ... Third Person view What the third person perspective is. Very simple, CS is a first-person perspective game, the player can not see their role image, only to observe the game outside their own content.