JP-7855635-B2 - Video control device, video recording device, video control method, video recording method, and video control program

Inventors

• 藤原 慎也

Assignees

• 富士フイルム株式会社

Dates

Publication Date

20260508

Application Date

20240517

Priority Date

20200626

Claims (6)

1. The system includes a first recording mode that records only video data obtained by developing the pixel data of a video based on the output from the imaging unit, and a second recording mode that records the video data and the pixel data, and a mode control unit that controls the imaging unit to perform imaging at a lower exposure value in the second recording mode than in the first recording mode. The mode control unit controls the system so that the amount of increase in brightness of the video data due to the brightness-related image processing included in the development process in the second recording mode is greater than the amount of increase in brightness of the video data due to the brightness-related image processing included in the development process in the first recording mode. Video control device.
2. A video control device according to claim 1, The mode control unit controls the image processing related to brightness according to whether it is the first recording mode or the second recording mode. Video control device.
3. The system includes a first recording mode that records only video data obtained by developing the pixel data of a video based on the output from the imaging unit, and a second recording mode that records the video data and the pixel data, wherein the imaging unit is controlled to perform imaging at a lower exposure value in the second recording mode than in the first recording mode. A video control method, The control is such that the increase in brightness of the video data due to the brightness-related image processing included in the development process in the second recording mode is greater than the increase in brightness of the video data due to the brightness-related image processing included in the development process in the first recording mode. Video control methods.
4. A video control method according to claim 3, The image processing related to brightness is controlled according to whether the first recording mode or the second recording mode is selected. Video control methods.
5. On the computer, The system switches between a first recording mode, which records only video data obtained by developing the pixel data of the video output from the imaging unit, and a second recording mode, which records the video data and the pixel data, and controls the imaging unit to perform imaging at a lower exposure value in the second recording mode than in the first recording mode. The control is such that the increase in brightness of the video data due to the brightness-related image processing included in the development process in the second recording mode is greater than the increase in brightness of the video data due to the brightness-related image processing included in the development process in the first recording mode. A video control program for executing processing.
6. A video control program according to claim 5, To the aforementioned computer, The image processing related to brightness is controlled according to whether the first recording mode or the second recording mode is selected. A video control program for executing processing .

Description

This invention relates to a video control device, a video recording device, a video control method, a video recording method, and a video control program. Patent Document 1 describes a camera system having a recording mode for storing RAW data and YC data for thumbnail images converted from the RAW data. Patent Document 2 describes an imaging device that, when the user presses a RAW video recording start button while recording Full HD (Full High Definition) video, starts recording RAW video while continuing to record Full HD video. Patent Document 3 describes an imaging device that switches between a first mode, which records a video file consisting of digitally developed images along with RAW image data, and a second mode, which records only the digitally developed images. Japanese Patent Publication No. 2007-166193Japanese Patent Publication No. 2017-28466Japanese Patent Publication No. 2010-21710 One embodiment of the technology described herein provides a video control device, a video recording device, a video control method, a video recording method, and a video control program that can perform imaging with appropriate exposure values depending on whether or not pixel data is recorded before demosaicing. This figure shows an example of an imaging device 100 according to Embodiment 1.This flowchart shows an example of processing performed by the imaging device 100 according to Embodiment 1.This figure shows an example of the gamma characteristics of BT. 709.This figure shows the relationship between the subject reflectance and the signal value after gamma correction in the gamma characteristic 31 shown in Figure 3.This flowchart shows an example of processing performed by the imaging device 100 according to Embodiment 2.This figure shows an example of a gamma characteristic that is brighter than that of BT. 709.This figure shows the relationship between the subject reflectance and the signal value after gamma correction in the gamma characteristic 61 shown in Figure 6.This figure shows another example of a gamma characteristic that is brighter than that of BT. 709.This figure shows the relationship between the subject reflectance and the signal value after gamma correction in the gamma characteristic 81 shown in Figure 8.This flowchart shows an example of processing performed by the imaging device 100 according to Embodiment 3.This figure shows an example of an imaging device 100 according to Embodiment 4. The embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) <Imaging device 100 according to Embodiment 1> Figure 1 shows an example of an imaging device 100 according to Embodiment 1. The imaging device 100 is a video control device capable of generating video by performing continuous imaging. However, the imaging device 100 may also have a function to generate still images in addition to the function to generate video. The external recording device 120 is located outside the imaging device 100 and records the RAW pixel data and video data output from the imaging device 100, as described below. The data output terminal of the imaging device 100 is connected to the input terminal of the external recording device 120 via a communication interface such as HDMI (High-Definition Multimedia Interface). Note that HDMI is a registered trademark. Data output from the imaging device 100 is not limited to HDMI; it may also be output using wireless communication (e.g., UWB (Ultra Wide Band) or wireless HDMI-SDI (High-Definition Multimedia Interface-Serial Digital Interface)). The imaging device 100 comprises an imaging unit 119, an imaging control unit 104, a RAW correction unit 105, a temporary storage unit 106, a development processing unit 107, a monitor 108, an output control unit 109, and an external output I/F 110. The imaging unit 119 generates video image data as a series of temporally continuous RAW pixel data by performing continuous imaging. Specifically, the imaging unit 119 includes an imaging lens system 101, an image sensor 102, and an ADC (Analog/Digital Converter) 103. The ADC 103 may be built into the image sensor 102. The imaging lens system 101 includes lenses for transmitting light from the subject and forming an image on the image sensor 102. The imaging lens system 101 may also include an aperture, an ND (Neutral Density) filter, a focus lens, a zoom lens, a shift lens, and the like. The movable parts of these imaging lens systems 101 are controlled by the imaging control unit 104. The image sensor 102 converts the optical image from the imaging lens system 101 into an analog image signal and outputs the converted analog image signal to the ADC 103. The image sensor 102 is composed of, for example, an image sensor such as a CMOS (Complementary Metal-Oxide-Semiconductor) type image sensor or a CCD (Charge-Coupled Device) type image sensor. Furthermore, the image sensor 102 is equipped with an electronic shutter, which is a shutter for adju