TWI223955B - Compensating for delay inherent in digital still camera imaging - Google Patents

Abstract

The delays in digital still cameras due to the lag between the press of the shutter release and the shutter opening and due to the reaction time of the photographer are compensated for by continuously capturing and storing images and by selecting a desired one of the images based on the lags. Upon processing an indication from the photographer, the camera begins capturing images at regular images and stores the most recent images in a first-in first-out buffer. At a second indication from the photographer, the camera selects, in accordance with the lags, the image in the buffer a fixed amount of time prior to the second indication for further processing. In this way, both the delay due to human reaction time and the delay due to shutter lag have been compensated for.

Description

1223955 The present invention relates to electronic still photography technology, and more particularly to the correction of the delay in the still photography technology from the time when the photographer intended to shoot to the actual time of the digital camera to the time of day. [No] [Previous technology] Generally, it is difficult to correctly select m = to capture a momentary moment, such as a child's smile, in the electronic still photography technology. The captured image is too late. Because the shutter opens for a while, that-the moment has passed. The inter-species error is mainly attributed to the two-j delay in the static camera system.延迟 One kind of delay is the reaction time required by the child from the smile of the child until the shutter is activated. The second kind of delay is the delay from the shutter to the shutter. This delay is unique to the digital camera, because before the digital phase = must be completed Some handlers. These two kinds of delays together cause the time of the shooting to be later than the time of the intended shooting. , Lost. : There are usually two, but there are severely missing methods. The maximum continuous shooting speed of the digital camera is 庚, 隹 -4, and the digital camera's temporary register is processed again, and then again. Crying η silly, 4 images full, and then Dan's images are stored for a long time in the bark as never stopped. There are two disadvantages to this technique. First, photographers: The in-state state can occur after the register is full, which is wrong. J ::: At the moment, some unwanted images can also be stored in the long-term storage. Second theta image, secondly, storage two: but also need to be manually selected and determined; Figure: only the first correction method is called " pipeline shooting " , Then 1 I7 with regular time ....., stored in long-term memory 1223955

At 911328R ^ 5. Description of the invention (2). This method also has several shooting actions that can be carried out smoothly. The resolution of the stored image is obviously lower than the resolution of the bit image. Secondly, when it comes, the work of the memory soon will be more complicated. In view of the deficiencies disclosed above, the inventor specifically mentions [Abstract] One object of the present invention is a late correction method. Another object of the present invention is to set the camera on, so that the user of the camera can be imaged. The object of the present invention is achieved by. The operating method includes a command corresponding to this instruction, the camera processes the program, including at least an autofocus function, and when the program processes (such as 10 frames per second) for shooting, the preferred implementation of the present invention is stored in the "first in, first out" The number of images that can be stored depends on the response time, which is generally 300 milliseconds. <Disadvantages. First, in order to ensure that the image processing speed of the next image needs to be fast enough, so that the normal results obtained with the same camera If the time when the image is intended to be captured is not filled in a short period of time, the conventional techniques for selecting an image to be captured for correcting the delay all have the invention. ^ The provision of a digital camera capture time is longer than the provision of a phase-activated shutter using the above method, which can capture the desired picture. A method of controlling the operation of the digital camera. When the photographer frames the scene, a finger is generated to start the captured image. All the necessary focus and exposure settings (if the camera has an automatic end, the camera starts at a fixed frame rate. In the example, the captured image is directly stored in the temporary storage method without processing. This temporary device is used in photography Average response time of the user, and if the camera captures a frame rate of 101223955 per second, case number 91132862 5. Invention description (3) frame, the register image but there is still a new room, the first to enter in continuous Immediately send a capture in seconds of the command. Receive the static image in the register closest to deleting the rest of the image with the same time and digital phase. [Embodiment] In the detailed description of the digital camera's light body chip (CMOS) Therefore, this article will explain, and in the field, please refer to the first part of the sensor 10, the sensor 16, and the aperture and shutter section lens aperture, the image sensor 16 is a success, often used line

At a minimum, the image needs to be temporarily registered. During the daytime, a command is issued, which is the order of the command, the last kind of fast image. If the register is saved, the image will be removed to save the new image. 22 When the photographer finds the day and day that he intends to capture, = 7. However, due to the response time of the person, it lags behind the time he wants to shoot 300 milliseconds and shoots at a fixed speed. The image at 0 leap second is stored and the stored image is processed using two programs taken with other digital cameras. Accordingly, the gate delays of the person are corrected. Before the invention, the first charge-coupled isometric image was only shown as shown in the conventional one, which is used to pre-photograph the optical and image combination part 1 4 and use the shutter to transfer between two-dimensional arrays. Let's first outline the architecture of a digital camera. The application of CCD or complementary metal oxide semiconductor sensors is well known, and the components related to the implementation of the invention will be described. The known components will not be described in detail. Digital cameras generally include optical and image sensing objects (not shown in the figure). The light is transmitted to the image. The image sensor section 10 includes optical components 12 and ′, which is a conventional component. The exposure time can be controlled using the aperture adjustment. In this embodiment, the photo-charge combination device of the image point sensing unit structure or the frame transfer technology corresponding to the day element is 1223955 ——_ Case No. 91132862 January 1 ^ V. Description of the invention (4) (CCD) or complementary metal Oxide semiconductor wafer (CMOS). The image sensor 16 is exposed to the light of the scene to generate an analog signal, and then the analog digital converter (A / D) 20 converts the analog signal of each image point into a digital signal. The analog-to-digital converter (A / D) 20 may be mounted on the chip of the image sensor 16 ', and each pixel may have its own converter. The digital signal generated from the analog-to-digital converter (A / D) 20 is stored in the register 30. The register 30 in this embodiment is a random access memory (RAM), which can store at least one frame. For images, the processing speed of the processor used in processing the image information in the register 30 is lower than the processing speed of converting the analog image information formed by the image sensor 16 into digital image information. 0 Shuangbu parts 1 4 camera. The bit processor starts to start. 70 Press to one Action Action This. When the resolver 40 is turned on, the digitally optimized image is displayed in the display and saved to the device 40 (implemented by startup), and the processor 40 includes the combination. When shooting Shoot. Normally, half (the first paragraph) 'includes the automatic setting of the shooting, the execution of all operations or image information once quality, and display on the display 50, the user will delete it preset, control the timing signal to a micro When the cameraman presses the fast shutter button 70, the camera's focus setting and exposure setting section presses the shutter. Other functions are stored in temporary storage compression and stored in long-term storage. Through exposure (by the aperture and control image information device, when it is connected to the timing switch button 70, it is a two-stage button. It can be performed in advance, but of course, the button 70 (the second paragraph and The exposure manipulator 30 is the long-term stream control and disposal device 40 which is often used for images stored in the long-term memory 60. The memory 60 can be limited to processing or can be stored in a memory.

V. Description of the invention (5) 6 〇 is a removable non-volatile memory card s actuator, it can also be a non-removable or solid f-disk drive loss memory card or other as long as it can be a fe card, continuous performance The charging user can move the 苴 to 1 song, b σ to save the required digital image until use, and move to the memory of other carriers. Shooting 2 5 ί: f can be competent for the momentary shooting of still life or posing images. At this time, the obtained R de and s are like the moments when the children are in phase. Many di-graphs f are usually later than the difference between the photographer's intentions. &amp; There are two reasons for the delay between outstanding photography and worthless work. The first reason is the shutter because before shooting: 1 =, real: the delay between capturing the image. Although the delay time is short, there are only two two two to perform η: necessary program. The shutter delay is a matter of time, but it is significant. The second original extension means that the photographer intends to take a picture between the shutter button and the push button. Response time: to be able to react immediately ’is always needed-and the shutter button time will be longer. In general, a simple decision] Knowing the response time is about 300 milliseconds; the method can be performed for the above two types of two-line picture two pictures 'first start the camera' processor 40, as mentioned earlier The q q η η ancient master 丨 find time can be automatically set to 30,000 seconds, or can be manually 1223955 by the photographer according to his experience Case No. 911 milk as 9 V. Invention description (6) = 疋. After performing step 丨 20, the photographer presses the shutter button to the first section of the one-two-step button), which means that the selected scene has been framed as required in the second way, waiting for the best time to come. At this point, the processor 40 starts to execute all pre-programs and starts to shoot at a fixed frame rate (step frame, //-this can be set by yourself, but generally the best choice is 10 per second: that is, the mother passes 1 κι 0-second time interval, the camera takes one shot. The time interval can also be set manually by the user, but each unprocessed original image that is not marked in the second shot is first-in-first-out (F丨 ⑼ = square j is stored in the temporary register 30 (step 150). Before the image is stored in the temporary storage, first perform a check in step 140 to determine the stored image, and set the maximum value of the stored image, and the value At least, the value of the image that can be captured at a frame rate of ^ ^ that is equivalent to the delay time (ie, the correction time). If it exceeds, delete the image that first entered == (step 160), and save the new Take the image (step 15). The newly captured image of Zibei will be directly stored in the temporary register 30 (step 150). In step = mode, the required temporary storage (storage space remains fixed and relatively small), Kang = Allows the camera to shoot continuously at a fixed speed without restriction. Miao j μ guarantees that it can completely store the corresponding value of "2 = interest. Generally, when the value is not very large, relatively cheap memory can be used to deal with it. Dazhuang I think if the shutter button 70 is not pressed second Segment (step 170), then the circle is shot repeatedly at a fixed time interval (step 180) = = J function that can change the exposure and focus settings for the next scene, with step 19. Check whether you want to change the setting, otherwise Performed in subsequent shootings

Page 12 1223955 Μ said-Case No. 9113 刈 fii? Remedy V. Description of the invention (7) = The eyepiece processing speed is fast enough after shooting. ♦ Take a photo of the man with a fixed exposure or focus, step 200. When the two photographers fully press the shutter button 70 (second stage), the image is displayed. * As mentioned above, because there is a reaction time of the photographer, == the time when the second is issued is behind the time when the shooting is intended. The instruction is issued /: 2 Start to select and confirm that the shutter is all pressed in the image of the register 30; select the image of the moment and time, that is, step 210. That is, step 220 is executed to delete the remaining images. Finally, the counter-lights are stored and stored in the long-term memory 6 () (step ⑽). 0 Select the desired image in 3 ° of the memory. The time is the delay time of the photographer's response. After that, 呻 瞀 π mountain will send out a retrieval parameter based on the correction between the day guard and the time when the image was taken. For example, 'the number', the image corresponding to the integer or: an integer is determined and determined (step: 20). Take the image so that the required image can be selected, but 'the processor 40 can = multiple images' in step 420 and process it and store it in the long \ select two :: R η three Or :: The number of stored images increases, and the storage in the register 30 is equal to or greater than. This $ 2 eve M: guarantee that all the images that may be needed are stored. With 疒: Important phase: Dual memory 6 ° contains the moment required by the photographer =

1223955

The above disclosed 'are merely preferred embodiments of the present invention, and the scope of rights of the present invention cannot be limited by this. For example, the two-stage shutter button can be replaced with two

Separately set buttons or two pushes on the same button, and other ways to achieve the same use effect. In addition, the image entered into the register may not be completely processed, as long as the image processing speed is fast enough, It can also be processed into the final effect image, and the temporary storage device can be stored in the long-term storage, or the continuous shooting images can be directly stored in the long-term storage without setting a temporary storage device. As for other advantages and equivalent modifications or changes of the present invention, those skilled in the art can easily derive them.

Page 14 1223955 _ Case No. 91132862_ Year Month Amendment _ Brief Description of Drawings [Simplified Description of Drawings] The first drawing is a block diagram of a digital camera used in the present invention. The second figure is a flowchart of a method for correcting the inherent delay in the digital camera acquisition of the present invention. The third figure is a flowchart of selecting a desired image in the present invention. [Representative symbols for main parts]

Optical and image sensor parts 10 Optical parts 12 Aperture and shutter assembly parts 14 Image sensor 16 Analog digital converter (A / D) 20 Temporary memory 30 Processor 40 Display 50 Long-term memory 60 Fast shutter button 70

Page 15

Claims (1)

1223955 911328B2 Amendment date 6. Scope of patent application 1. A digital camera's internal extension processing program corresponding to static images &lt; correction method, including the application of mathematical image information stored in long-term ^ commission ^ image information The digital camera includes a two-dimensional array of the image sensor and the image sensor composed of a point sensing unit, and the image sensor is exposed to the point sensing unit. The image information is converted from the light of the object to form the image information information element. The method further includes a digital image of the image points. The following steps are performed to fix the image: Frame speed brakes are co-existed in the temporary register;, a group of images are taken in the bit mode, (2) a command indicating the shooting time is manually issued; u) according to a preset state of the stored image before the manual command is issued, select and size Time, from the time interval between the temporary release of time + shooting time and all manual images (5; all images except the image; save. "The image is processed and moved to the long-term memory for 2m Lee! As described in item 1 Intrinsic delay method in digital camera acquisition, step (1) further includes the following steps: (a) taking an image; Λ = = number such as / the number of images stored in the temporary register does not exceed a predetermined storage value, then Directly save the captured image and perform step (d). If the number of images stored in the temporary register reaches a preset value which is a large value, the first captured image is removed from the temporary register; Oka image and save new Page 16 1223955 __1 ^ _9Π32862__f Month Revision __ VI. Patent application scope (d) Repeat steps (a) to (d) every fixed time interval to capture and store the next image. 3. The method for correcting the intrinsic delay of the digital camera as described in item 2 of the patent application park, wherein step (3) further includes the following steps: (e) calculating based on the preset time and the fixed time interval A retrieval parameter is obtained; (ί) The required image is determined according to the retrieval parameter. 4. Divide the amendment time of Rushen 5. Revision time of Rushen. 6 · Rushen's correction 7 · Rushen's correction time 8 · Rushen's correction line 9 before optical photography · One method of bit processing patenting method, patent method, patent method, patent method, size . The patented method, the set optical setup, the digital phase program, inherently delays the image acquisition of the digital camera described in item 3 of Qianwei, where the difference in step (e) includes the division operation of the preset time interval. The digital camera described in item 1 is delayed internally when the preset time is the response of the average person. The digital camera described in item 1 is internally included in the time ^. The register is part of the long-term memory. . %, The fixed time interval setting of the digital camera described in item 2 above depends on the pre-set $ range of the digital camera described in item 2 where before step 0) t also includes = intrinsic The delay step includes the step of modifying the digital camera in step (d). The image information corresponding to the still image / ~, including the application of wife &quot; W line processing, and the shoulder Page 17 Correction of Intrinsic Delay in Camera Capture 1223955 —Amendment No. 911328B? 6. Scope of Patent Application-The processed image information is stored in the long-term storage device, which is stored in the two-dimensional array and in the book. 'The digital camera includes a temporary storage sensor to make the image The sensor exposes a d-point sense: an image formed as early as 7 ^ and an element that converts image information from scene light to form image information information. The method further includes a digital image corresponding to each image point. The following steps are taken: (1) A group of images is captured at a fixed frame rate so that the group of images is taken at the time of shooting, and the images are stored in a temporary register; The group of shots engraved within this period, manually issued instructions to indicate when they wanted to shoot (3) according to the manual instructions issued a set of images in the group of images stored in the memory are selected ... From the moment the two steps closest to the order. Encountering ^ out and starting to enter the group — refers to the method of group image shooting, as described in item 9 of the scope of patent application, a correction method, in which one of the preset values is set == between the delay and the number as described in item 9 of the scope of patent application . : Positive method, where the group is temporarily stored: the digital image starts at the delay. U Ί 豕 Basic raw Page 18 1223955 1 3 &amp; The internal delay of the digital camera acquisition as described in item 9 of the patent claim scope, where the township square goes ‘where the period is greater than the human response time. 14 The digital camera described in item 9 of the patent application has an inherent delay in image acquisition, where step (1) further includes the following steps: (a) taking an image; (21 if the register The number of stored images does not exceed the preset storage (£ j, then directly stores the captured images and performs step (d); ^ .1 The number of stored images in the right temporary register reaches the maximum preset storage Image; then remove the first entered image from the temporary storage group and save it in a new one (wdi repeats steps (a) to (d) every fixed time interval to capture the next image) 2 · Remove the internal delay of the digital camera as described in Item 9 of the patented target range 1 ^ ^ 'Including the deletion of all images except the selected image from the captured image Um &lt; 1 6 · — a kind of digital camera internally when taking images,. ^ ^ Digital processing program for still image comparison &gt; / ° ^ The processed image information is stored for a long time; At line f, 'and the memory, the two-dimensional array of the digital camera and the digital camera include temporary 飧 θ: 目 丨 丨 泪, you It is divided into Γ, and the image sensing constituted by the corresponding image point sensing unit is an element that warms up the image sensor and converts image light to image information to form image signal information. The method also generates a digital map corresponding to each image point (&quot; in a roughly fixed duck step ', when the focus is locked on the image, so that the shooting time of a set of exposure-appropriate images covered by the interpolation method covers a certain time) Page 19 1223955 Case No. 91132862_ λ_ Name Amendment 6. Scope of patent application (d) Repeat steps (a) to (d) every fixed time interval to capture and store the next image. 2 1 · Correction method for inherent delay in digital camera acquisition as described in item 16 of the scope of patent application, which also includes deleting all the images in the register except the selected image, and Steps for further processing and saving of images. 22 · —A method for correcting the inherent delay in digital camera acquisition, including applying a digital processing program to process the image information corresponding to a still image, and "storing the processed image information in a long-term memory. The digital camera Including an image sensing image composed of a two-dimensional array of image point sensing units corresponding to daylight elements == the device is exposed to the light of the scene to form image information and the pair = generates digital image information corresponding to each image point & lt疋 仵, the method includes the following steps: Private (^) 乂 Approximately a fixed frame rate Use digital mode to take a picture with the eye #, j§, and focus locked; w Day group exposure first (2) During the shooting of this group of images, prepare + &gt; before shooting, immediately process the captured image; and-the image (3) manually issue a finger and store it in the long-term memory; U) 枳Secret 7 indicates that the image is not intended to be captured; the image stored in the period memory ::::, a time set first, from the time when the long command is issued ^ near ^ set at least one shooting time and manually (5) from long out of 2 ?; Images near this time; Image. Delete except selected image All other a first 211,223,955 Page 22