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Qual é a resolução do olho humano? Quantos megapixels?
Primeiro de tudo, eu quero começar por stat que o olho humano é uma estrutura analógica e não é completamente possível medi-lo com um tamanho de pixel de termo digital. O centro de visão no cérebro não pode peretive a informação clara dos olhos como uma cortina de filme. Cria uma imagem comentando as informações de luz do cérebro. Esta imagem é constantemente atualizada, dependendo da velocidade dos neurônios que vão para o cérebro, ou seja, as células nerand.
Por exemplo, se considerarmos que um valor de fps (quadro por segundo), o 30fps em um filme de vídeo é suficiente para os nossos olhos para ver a imagem completamente fluentemente. Mas isso não significa que o olho humano é 30fps. O olho humano tem um determinado valor limiar, e quando você olha para um objeto de passagem que é mais rápido do que esse valor, ele não pode capturar seus movimentos e vê-lo como nada passou. Usando câmeras com altas velocidades do obturador usado hoje em dia, o movimento de uma bala pode ser facilmente examained em milissegundos.
Podemos fazer um simples teste para a velocidade do olho humano. Em primeiro lugar, traga a freqüência de varredura vertical do monitor do computador para o CRT (tubo de cátodo) para 60 Hz. Para fazer isso, clique com o botão direito do mouse na área de trabalho e selecione Propriedades e siga as guias do monitor para acessar as configurações Hz. Depois de tê-lo para o 60 Hz, olhar para a tela a uma distância de 30cm, foco em um objeto no lado do monitor, mas ver o monitor com a ponta do olho. Você vai notar como a tela de atualização que você normalmente não se sente quando você está olhando em linha reta é digitalizada de cima para baixo. Se você notar o 60 Hz enquanto você está olhando para ele normalmente, experimentá-lo em 75 Hz. Eu posso segurar-me a 75 Hz, mas não consigo ver mais nenhuma transição de página em 85 Hz e acima. A velocidade do olho pode variar de pessoa para indivíduo. As pessoas que seguem constantemente detalhada e movendo as coisas com os olhos e trabalhar muito cuidado com reflexos de alto-olho são vistos mais rápido.
A retina com os sensores de luz dos nossos olhos é uma membrana composta por uma estrutura neural. Os sensores de luz na retina são o tamanho das câmeras digitais, bem como os sensores. Na verdade, na porção do poço da retina (fóvea), os números desses sensores são mais do que outras regiões e a luz caindo sobre a retina é comprimida no cérebro. É por isso que nos olhamos às vezes e vemos como eles são. O número de células do sensor de luz em nosso olho (ou dizer pixel) não é perdoado pela qualidade de visão, desde que seja acima de um determinado valor crítico. Porque o cérebro completa a imagem. Mesmo se não temos um olho, a nossa resolução de imagem não é deccreased, apenas um pouco de sentimento de profundidade desaparece. Não vemos uma parte da imagem em falta, mesmo nos casos em que a maioria das células claras no olho são ruained, chamado de "desprendimento" da retina. Podemos olhar para ele assim: você está fechando metade da lente em sua câmera, mas você ainda vê a imagem cheia; Porque o processador da câmera completa a parte que falta.
A fim expressar a capacidade da visão do olho como megapiels, é necessário testar os olhos dos receptores nos pixels, pensando sobre que nível de detalhe o cérebro pode criar. O olho humano é um órgão pequeno e faz todas as coisas com uma pequena quantidade de luz que vem sobre ele. Mas as lentes das câmeras de alta megapixel são bastante grandes, e dependendo dele, eles vêem muito mais áreas iluminadas em uma cena escura do que o olho humano. É possível dizer claramente que se você tomar a maior taxa de megapixels com uma lente de olho-sized e, em seguida, puxar a fotografia e compará-lo com a mesma paisagem, eu tenho certeza que o olho humano pode ser mais detalhes e. A fotografia tomada pela máquina digital será compreendida que pode capturar muito menos detalhe se está sendo fotografado e examinado na mesma maneira que os povos são vistos sem zumbido.
Portanto, o olho humano é um órgão que é demasiado perfeito para ser comparado com a imagem de lentes artificiais. Mas os dados digitais podem ser expressos como megapiels. Se as condições acima referidas forem fornecidas, o cálculo pode ser realizado colocando um valor de aproximadamente. Mas não devemos ser capazes de pensar que o termo megapiels é nada, mas um conceito que mostra quantos pixels são realmente exibidos em uma cena. Claro, quanto mais pixels ele vai olhar, mais detalhada é, mas para compará-lo com a proporção do olho humano, é necessário Insider o assunto como um assunto de investigação principal e investiggate e experimental em condições laboratoriais.
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